#QSFP28 DAC Cables

[fibrecrossltd]

What is a DAC cable? | Fibrecorss

A DAC (Direct Attach Cable) is a high-performance, cost-effective networking solution designed for short-range, high-speed data connectivity in data centers and enterprise environments. These twinaxial copper cables feature integrated transceivers on both ends, enabling seamless connections between switches, routers, servers, and storage devices without the need for separate optical transceivers. DAC cables support a variety of speeds, including 10Gbps (SFP+), 25Gbps (SFP28), 40Gbps (QSFP+), 100Gbps (QSFP28), 200Gbps (QSFP56), 400Gbps (QSFP-DD), and up to 800Gbps.DAC cables are ideal for applications requiring low latency and high bandwidth

[markeduke]

Innovative Fiber Optic Solutions for Modern Networking Demands

In an era where connectivity reigns supreme, the backbone of seamless communication lies in the intricate web of fiber optics. With businesses, homes, and industries relying heavily on efficient data transmission, the demand for advanced fiber optic solutions has surged. Among the pioneers in this domain stands SDGI (Strategic Digital Group Inc.), a trailblazer in cutting-edge optical fiber technology. Let’s delve into the realm of SDGI’s offerings, exploring their high-quality multimode and Single mode fiber, FTTH drop cables, QSFP28, and DAC cables, revolutionizing networking as we know it.

At the heart of SDGI’s portfolio lies their commitment to excellence, evident in the meticulous design and manufacturing of their single-mode and multimode fibers. Single-mode fibers are engineered to carry signals over long distances with minimal loss, making them ideal for telecommunications and long-haul networking applications. On the other hand, multimode fibers cater to shorter-distance transmissions within data centers and enterprise networks, offering robust performance and scalability.

The Fiber to the Home (FTTH) revolution has transformed the landscape of broadband access, ushering in an era of high-speed internet connectivity directly to residences and businesses. SDGI’s FTTH drop cables play a pivotal role in this paradigm shift, facilitating seamless connectivity from the network backbone to individual premises. These cables are designed for easy installation and durability, ensuring reliable broadband access for end-users.

As data consumption continues to skyrocket, the demand for high-speed interconnect solutions intensifies. SDGI addresses this need with their QSFP28 (Quad Small Form-factor Pluggable 28) transceivers, which support blazing-fast data rates for intra-rack and inter-rack connectivity in data centers. Whether it’s high-performance computing, cloud infrastructure, or storage area networks, SDGI’s QSFP28 solutions deliver the speed and reliability required for today’s data-intensive applications.

In addition to transceivers, SDGI offers Direct Attach Copper (DAC) cables, providing cost-effective interconnect solutions for short-reach applications. DAC cables leverage copper conductors to deliver high-speed connectivity between networking devices, offering a flexible and economical alternative to traditional optical interconnects. With varying lengths and configurations available, SDGI’s DAC cables cater to diverse networking requirements, from server-to-switch links to high-density interconnects within data center environments.

What sets SDGI apart is not just the breadth of their product offerings, but also their unwavering focus on innovation and quality. Their advanced fiber optic solutions undergo rigorous testing and validation to ensure peak performance and reliability in real-world deployments. Whether it’s enhancing network efficiency, increasing bandwidth capacity, or future-proofing infrastructure, SDGI remains at the forefront of technological advancement, empowering organizations to stay ahead in an ever-evolving digital landscape.

Beyond their product portfolio, SDGI prides itself on its customer-centric approach, providing comprehensive support and consultation services to address the unique needs of each client. From initial design and deployment to ongoing maintenance and optimization, SDGI’s team of experts is dedicated to delivering tailored solutions that drive business success.

SDGI stands as a beacon of innovation in the realm of fiber optic technology, offering a comprehensive suite of solutions to meet the diverse networking needs of the modern world. Whether it’s enabling high-speed internet access in remote communities, powering mission-critical data centers, or facilitating seamless communication in smart cities, SDGI’s advanced fiber optic solutions are paving the way for a more connected and prosperous future.

[Related site1] [Related site2]

[hound-dog-development]

AddOn Juniper Networks QFX-QSFP28-SFP28-DAC-3M to Multiple OEM Compatible TAA Compliant 100GBase-CU QSFP28 to 4xSFP28 Direct Attach Cable (Passive Twinax, 3m)

AddOn Juniper Networks QFX-QSFP28-SFP28-DAC-3M to Multiple OEM Compatible TAA Compliant 100GBase-CU QSFP28 to 4xSFP28 Direct Attach Cable (Passive Twinax, 3m)

[holyfriendfreakmonger]

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[gbicshop]

We provide the best optical fibers products at our online Gbic-shop.de shop. One of the products includes QSFP Breakout Direct Attach Kabel, which converts simple signals into electromagnetic signals. Our company provides this product is very compatible and advisable rates with efficient cost. You can buy it or request a sample at Gbic-shop.de.

[gbicshopde-blog]

[suntelecomcn]

Data Center Cabling Solution: Active Optical Cable

As data rates rise and data center grows in size, copper cable is getting stretched to its limits. However,  active optical cable (AOC) has emerged to replace copper cable in data centers and high-performance computing (HPC) applications. It provides high-speed, high reliability, high flexibility, and low power consumption. This article will provide some knowledge of AOC cable. 

What is an Active Optical Cable?

Active optical cable (AOC) is an optical fiber jumper cable terminated with optical transceivers on both ends. It uses electrical-to-optical conversion on the cable ends to improve the speed and distance performance of the cable without sacrificing compatibility with standard electrical interfaces.

Active Optical Cable Structure

AOC cable consists of the fiber optic connector and fiber cable. The connection between fiber cable and fiber optic connectors is not separable. If the fiber optic connector or fiber cable needs to be changed, they should be removed together. The electrical and optical signal conversion can be achieved right through each end of the optical fiber.

Active Optical Cable Types

There are several varieties of AOC cable available on the market , including 10G SFP+ AOC, 25G SFP28 AOC,40G QSFP+ AOC, 56G QSFP+ AOC, 40G QSFP+ to 4x SFP+ breakout AOC, 40G QSFP+ to 8x LC breakout AOC, 100G QSFP28 AOC, 100G QSFP28 to 4x SFP28 breakout AOC and 120G CXP AOC, etc. These AOC cables are commonly used for short-range multi-lane data communication and interconnect applications between two devices, such as rack-to-rack, shelf-to-shelf interconnect, storage, hubs, switches, routers, servers, etc.

Features and Benefits

AOC cable provides low power consumption, high density, high speed, high reliability, high security, small size, strong heat dissipation, low electromagnetic interference, long transmission distance, low energy consumption, low latency, lightweight, and ease of installation.

Application Scenarios

AOC Cable is used to connect top-of-row (ToR) switches to end-of-row aggregation switches, and to connect the ToR switch with storage subsystems at reaches greater than direct attach copper (DAC) limits of 3-7 meters. The following three scenarios show the specific applications.

Scenario 1:  AOC cable is used to connect two switches directly.

Scenario 2: The breakout AOC cable provides a highly cost-effective way to connect within racks and across adjacent racks. The following figure shows 40GbE QSFP+ to 4 x SFP+ AOC cable connecting to a 40G QSFP+ port switch on one end, and to four 10G SFP+ port switches on the other end.

Scenario 3: For the long-haul transmission between the two switches, a suitable solution is recommended to use single-mode patch cable, OEO converters, and AOC cables, which can provide seamless integration of different fiber types by converting multi-mode fiber to single-mode fiber.

Conclusion

AOC cable achieves high data rates over long reaches interconnection, which is the best solution for data centers and high-performance computing applications. Sun Telecom specializes in providing one-stop total fiber optic solutions for all fiber optic application industries worldwide. Contact us if any needs.

[fibermarts]

QSFP Cable and Connectors Assemblies

A quad (4-channel) Small Form-factor Pluggable Optics Transceiver is also known as a QSFP cable. For applications requiring 40 Gigabit Ethernet (40GbE) data transfers, it is a small, hot-pluggable fiber optical transceiver. They are often used for the implementation of 40G Ethernet, Infiniband, and other communications protocols in data centers.

It connects a fiber optic or copper cable to network equipment, such as a switch, router, media converter, or similar device.

In addition to copper cable media, QSFP+ optic transceivers are made to support Serial Attached SCSI, 40G Ethernet, 20G/40G Infiniband, and other fiber optic communication standards. In comparison to SFP+ optic modules, the QSFP28 cable significantly increases port density by 4x.

Optical transceivers are compact, strong devices that add fiber ports to switches or other networking equipment by connecting them to copper or fiber optic cables. Data is transmitted using optical fiber in conjunction with fiber optics in the form of light pulses that travel at very high speeds and can cover very long distances. The transceiver, which is a laser with a certain wavelength that transforms electrical signals into optical signals, is a crucial part of the fiber optic network. The data is then converted into a signal with a specific wavelength by the transceiver and sent over the optical fiber. Wideband signals are those that are 850 nm, 1310 nm, and 1550 nm in wavelength. Narrow bands are the term for CWDM or DWDM signals. Each channel is unable to interact with the others due to the special property of light.

This indicates that a network can handle the transmission of both wideband and narrowband signals. Direct attach copper (DAC), active optical cables (AOC), optical modules, and active copper cables are all types of QSFP interconnects (ACC). The least costly choice is DACs. They offer a connection that depends on host signal processing. The maximum length that can be achieved depends on the cable assembly's insertion loss, which is determined by its length and cable gauge and is guided by the IEEE specifications (see below) (AWG). The AWG of a wire has an inverse relationship with its size. AWG and wire diameter for QSFP cable assemblies are plotted in the table below.

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[scottmortenson]

Approved Networks Releases 100G QSFP28 Universal Transceiver

by Scott Mortenson

Approved’s New QSFP28 Universal Transceiver Provides an Alternative Solution for Multi-Mode LC and Single-Mode CDWM4 Environments

Lake Forest, California (December 1, 2022): Approved Networks, a brand of Legrand, the industry leader and authority in programming, testing, and distribution of quality third party optics, announced today the addition of 100GBASE QSFP28 Universal transceiver for both multi-mode and single-mode applications.

The QSFP28 Universal provides an alternative solution for 100G multi-mode Lucent Connector environments, with the added feature of compatibility with single-mode CDWM4 optics up to 2km.

“Existing multi-mode LC solutions are difficult to source – up to 40 weeks in some cases – and they’re more expensive,” said Brian Patton, VP, Engineering, Approved Networks. “Our universal solution not only costs less, but is in stock, and offers the single-mode interoperability that no other multi-mode LC solution has.”

The QSFP28 Universal transceiver is part of a deep and diverse family of optical devices from Approved Networks, including Direct Attach Copper, Active Optical Cables, Active Electrical Cables, and passive WDM solutions. The QSFP28 Universal joins an extensive line of transceivers for Enterprise Data Centers, Managed Services Data Centers, Colocation Data Centers, and Cloud Data Centers.

Find out more about the QSFP28 Universal here.

About Approved Networks, a brand of Legrand

Approved Networks, a brand of Legrand in the Data, Power, and Control Division, provides cost-effective, high-performance optical solutions to a global network of Fortune 500 Enterprise, Data Center, and Service Provider partners. For over 30 years, Approved has been the industry authority on OEM alternative optical networking connectivity through a commitment to technical engineering, stringent quality standards, extensive testing capabilities, and dedicated customer service and support – before, during, and after deployment. Over 10,000 customers in more than 40 countries trust Approved Networks transceivers, DACs, AOCs, and passive solutions to light their networks. https://www.approvednetworks.com

About Legrand

Legrand is the global specialist in electrical and digital building infrastructures. Its comprehensive offering of solutions for commercial, industrial and residential markets makes it a benchmark for customers worldwide. The Group harnesses technological and societal trends with lasting impacts on buildings with the purpose of improving life by transforming the spaces where people live, work and meet with electrical, digital infrastructures and connected solutions that are simple, innovative and sustainable. Drawing on an approach that involves all teams and stakeholders, Legrand is pursuing its strategy of profitable and responsible growth driven by acquisitions and innovation, with a steady flow of new offerings—including products with enhanced value in use (faster expanding segments: datacenters, connected offerings and energy efficiency programs). Legrand reported sales of €7.0 billion in 2021. The company is listed on Euronext Paris and is notably a component stock of the CAC 40 and CAC 40 ESG indexes. (code ISIN FR0010307819). https://www.legrand.us/

[monicaliuliublog]

QSFP28 100G Transceivers & DAC Guide

QSFP28 100G Transceivers & DAC Guide

by http://www.fiber-mart.com Telecom industry embraces the prosperity of 100G optics market in 2017. With such a bright future, fiber optic market attracts a wide attention, and many vendors want a piece of the pie. The 100G optics like the CFP, QSFP28 modules and cables are varied in different standards. QSFP28 100G, along with its compact size and reliable performances, gradually becomes the…

[and-systems]

✅ Кабели DAC 🌀 Альтернативой оптическим SFP и QSFP модулям, или-же трансиверам служат кабели DAC Их применяют в случаях, когда требуется соединить расположенное на небольшом расстоянии оборудование. Рассмотрим их назначение подробнее в данной статье. ✔️ Кабели DAC — что это и зачем В терминологии DAC полностью звучит как Direct Attach Copper Cable. В переводе с английского означает — «кабель для прямого медного подключения». Иными словами, это твинаксиальный кабель-переходник, предназначенный для соединения коммутаторов с серверами. Такого типа соединитель представляет собой экранированный медный коаксиальный или волоконно-оптический шнур, имеющий ограниченную длину и оснащенный закрепляющими трансиверами с обоих концов. Отметим, что трансиверы в этом случае могут быть разного формата — от SFP до QSFP28. Что касается длины проводника, то при внутренних соединениях ее показатель чаще всего находится в диапазоне от 1 до 20 метров. ✔️ Типы DAC проводников Отличительным параметром кабелей прямого подключения выступает длина. В основном они разделяются на два типа: 🔸 Пассивные 🔸 Активные Первый тип проводника выглядит как твинаксиальный кабель, который напрямую соединяется с РСВ трансивера, расположенного на его окончании. Длина такого переходника может достигать 7-ми метров (для 10G кабеля). Но во избежание рисков относительно стабильного функционирования проводника, многие производители не изготавливают их больше 3-ех метров. В свою очередь второй тип DAC кабелей представляют собой переходник с лазерным блоком, который соединен с РСВ. Таким образом, длина соединителя максимально достигает 20-ти метров для 10G кабеля и 3 метров для 100G кабеля. Отметим, что DAC проводники еще отличаются диаметром сечения токопроводящей жилы. Данный показатель характеризуется в AWG единицах. Соответственно, от AWG зависит максимальный уровень длины переходника. То есть, когда происходит увеличение длины, то одновременно повышается вносимое затухание. ⤵️ Полный текст в блоге AND-Systems: http://amp.gs/jliJR #andsystems #andpro #андсистемс #твинаксиальныйкабель #кабельдляпрямогомедногоподключения #кабелиdac

[gearlinkoptic]

Mellanox Transceiver Compatibility

Gearlink Technology has been focusing on developing and manufacturing high speed optical transceivers for over ten years. Our optical transceivers are compatible with full range of Mellanox transceivers, such as Mellanox FE SFP transceivers, Mellanox GE SFP transceivers, Mellanox SFP+ transceivers, Mellanox SFP28 transceivers, Mellanox QSFP transceivers, Mellanox QSFP+ transceivers, Mellanox QSFP28 transceivers, etc.

 SFP 1.25G 850nm 550m LC Transceiver

 SFP 1.25G 1310nm 10Km LC Transceiver

 SFP 1.25G 1310nm 40Km LC Transceiver

 SFP 1.25G 1550nm 80Km LC Transceiver

 SFP 10/100/1000Base-TRJ45 Transceiver

 SFP 10GBase-T RJ45 Transceiver

 SFP28 25G 850nm 100m DDM LC Transceiver

 SFP28 25G 1310nm 10km DDM LC Transceiver

 QSFP 100G 850nm 100m MPO Transceiver

 QSFP 100G 1310nm 10km LC Transceiver

 QSFP 100G CWDM4 2km LC Transceiver

 SFP28 25G Copper Twinax Cable XM DAC

 QSFP28 100G Copper Twinax Cable XM DAC

 QSFP28 100G to 4*25G SFP28 Copper Twinax Cable XM DAC

 SFP28 25G 850nm XXm AOC

 QSFP28 100G 850Nnm XXm AOC

[welcomecboit]

The modern data center consists of high-speed connectivity to customers throughout the world as well as flawless, high-flow media. Data enter vendors should maximize the density of optical transceiver ports on their Ethernet switches in order to offer a low-cost solution for connecting switches. DAC stands for direct attach a copper cable for 100G QSFP28. In addition, there is a 100G QSFP28 Copper Cable and an Ethernet DAC that can handle 100G. This cable is sometimes known as 100GBASE-CR4 QSFP cable. Each copper pair can transmit data at speeds of up to 25GbE per socket. QSFP28 cable assemblies are therefore suited for space-saving connectivity in data centers, networks, and high-performance computing applications.

 ·         Read the full article here:

https://www.cbo-it.de/en/blog/transceiver/qsfp-and-qsfp28-transceivers-cabling-solutions.html

[thoughtfulsaladgarden]

Answers to frequently asked questions about optical modules

Optical module is an optoelectronic device for photoelectric and electro-optical conversion. The transmitting end of the optical module converts the electrical signal into an optical signal, and the receiving end converts the optical signal into an electrical signal. This article will answer the common questions about optical modules in optical communication.

 1. What does passive and active module mean?

 The passive and active modules are for AOC high-speed cable and DAC copper cable. The AOC module is equipped with laser, detector, MCU, driver chip, transimpedance amplifier and limiting amplifier, so it is an active cable; Similarly, ACC copper cable module is also an active cable with signal equalization and amplification chip, EEPROM, resistance, capacitance, inductance and copper wire. The DAC copper cable has no signal equalization and amplification chip, only EEPROM, resistance, capacitance, inductance and copper wire, so it is a passive cable.

 From the perspective of circuit properties, passive devices have three basic characteristics: 1)They either consume electric energy or convert electric energy into different forms of other energy. 2)Just input the signal and can work normally without external power supply. 3)Common passive electronic devices passive devices in electronic systems can be divided into circuit devices and connection devices according to their circuit functions.

 2. Issues related to FEC function of 25G/40G/100G optical module

 FEC is an error correction technique that solves the problem in optical signal transmission when part of the optical signal at the transmitting end is scrambled during transmission, resulting in a misjudgment at the receiving end. Forward Error Correction (FEC) is used in 100G and other high-speed optical modules. Generally speaking, when this function is turned on, the transmission distance of the high-speed optical module will be longer. 10G and below 10G optical modules, 40G optical modules, 100G LR4 optical modules do not need to open FEC; 25G SR, 25G LR, 25G AOC, 25G copper, 100G SR4, 100G PSM4, 100G AOC, 100G CWDM4, 100G QSFP28 ER4, 100G 4WDM-40, 100G copper cable need to open FEC.

3. Why some optical modules can be divided into four channels and some can't?

MPO interface optical modules all can be divided into four channels, such as: 40G-QSFP-SR-MM850, 40G-QSFP-LSR-MM850, QSFP28 SR 100G MM850 multimode optical module, 40G-QSFP-LR4-PSM-SM1310, 100G-QSFP-iLR4-PSM-SM1310 single-mode Optical modules; the above 40G/100G optical modules work the same, are 4x10G, 4x25G design scheme, using a point four fiber patch cable, one end of the MPO 12 interface is 8 cores (4-way transmit, 4-way receive, the middle 4 idle), the other end of 8 LC connectors.

4. What are the parameters of the optical module? What do they mean?

The main parameters of optical module include rate(bandwidth), transmission distance, central wavelength and interface type.

 The DDM monitoring parameters of optical module digital diagnosis include working voltage, shell temperature, bias current, TX power and Rx power; The signal quality parameters of optical module include transmitted optical power, extinction ratio, transmitted optical eye diagram, jitter, margin, received optical power, received sensitivity, output electric eye diagram and bit error rate.

The manufacturer burns the identification code in the optical module register according to the protocol. The switch software accesses the optical module register according to the protocol rules, then identifies the optical module and issues the configuration.

 5. What’s the difference of 40G and 100G optical module?

 The interface type of 40G/100G optical module is the same as the communication principle, and the single-mode optical fiber used is the same. The multi-mode optical fiber grade OM2 and above is required for 40G multi-mode optical module, while the multi-mode optical fiber grade OM3 and above is required for 100G multi-mode optical module; For 40G-QSFP-SR-mm850, 40G-QSFP-LR-mm850 and 100G-QSFP-SR-mm850 optical modules, it is required to use "MPO/MTP-PC-Female - MPO/MTP-PC-Female, multi-mode, OM3-300, 12 core, Φ 3.0mm, LSZH, water blue, B-type" optical fiber jumper.

 Fiber Mall 100G QSFP28 SR optical transceiver

  6. How does BIDI type module achieve using only one fiber?

 Usually, optical modules have two different fibers for transmitting and receiving.

Bidi (BI direction): in the same optical fiber, two optical signals with different wavelengths are used to transmit and receive optical signals in two directions respectively, and a prism is used inside the module to distinguish the optical signals in two directions. For example, like QSFP28 100G SRBD, since the laser wavelengths sent by the modules at both ends are inconsistent, pay attention to pairing when using Bidi modules.

 7. What are the types and construction principles of optical fibers?

 The optical fiber is a very fine white glass core, which must be covered by several layers of protective structures before use. The coated cable is an optical cable. Fiber types are divided into single-mode fiber and multimode fiber.

 Differences between single-mode and multimode fibers:

1) Single mode fiber uses solid-state laser as light source, and multi-mode fiber uses light-emitting diode as light source;

2) Single mode fiber has long transmission frequency bandwidth and transmission distance, but needs laser source, which has high cost, low transmission speed, short distance and low cost of multi-mode fiber;

3) The core diameter and dispersion of single-mode fiber are small, and only one mode transmission is allowed;

4) Multimode fiber has large core diameter and dispersion, allowing hundreds of modes of transmission;

5) Multimode optical cable has a thick core and the price will be relatively expensive.

[holyfriendfreakmonger]

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[gbicshop]

Looking for the DAC Kabel at the best prices?

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