April 19, 2018

What is UTP, FTP and STP Copper Cable?

UTP cable (Unshielded Twisted Pair) Twisted pair cable is the most used, it does not possess any additional protection to the PVC coated and it has 100 Ohm impedance. The connector most commonly used in this type of cable is the RJ45, similar to the RJ11 used in phones (but a little large), but they […]

April 9, 2018

Inspect and Clean High Density MPO/MTP Connector

Before you install the MPO connectors in the data cnter, it is essential that all the fiber end-faces and the ferrule are really clean. especially when you thinking about lining up 12, 16, 24 or 32 pieces of 9um fibers in one or two rows, it requires tremendous precision. Any dirts in the mix on […]

March 29, 2018

Introduction to 400G QSFP-DD Optical Transceivers

The QSFP form factor is today’s industry workhorse for delivering 40 and 100GbE. The “Q” is for “quad” — a nod to the four-channel electrical interface, with each lane running at 25 Gbps for 100GbE. QSFP-DD adapts the same basic concept as its predecessor, but doubles the electrical contact density, via eight differential pairs capable […]

March 26, 2018

FAQ about OM5 MM Fiber

What is the standard for OM5 fiber? Telecommunications Industry Association (TIA) initiated a workgroup in October 2014 to develop guidance for a wide band multimode fiber (WBMMF) 50/125 μm standard to support short wavelength division multiplexing (SWDM) transmission. The TIA-492AAAE Standard was published in June 2016.The IEC WB MMF standard is anticipated to be completed […]

March 21, 2018

Introduction to SFP-DD Optical Transceivers

SFP-DD is short for SFP Double Densty, it is a new module and cage/connector system similar to current SFP module, but with an additional row of contacts providing for a two lane electrical interface. It is being developed by the SFP-DD MSA as a key part of the industry’s effort to enable high-speed solutions. The […]

March 19, 2018

Introduction to OSFP Optical Transceiver

OSFP is short for Octal Small Form Factor Pluggable. it is being designed to use eight electrical lanes and each lane for 50GBE to deliver 400GbE. compared with QSFP transceiver, It is slightly wider and deeper, but it still supports 36 OSFP ports per 1U front panel, enabling 14.4 Tbps per 1U. OSFP is a […]

March 18, 2018

Introduction to CFP8 Optical Modules

The C form-factor pluggable (CFP) is a multi-source agreement to produce a common form-factor for the transmission of high-speed digital signals. The c stands for the Latin letter C used to express the number 100 (centum), since the standard was primarily developed for 100 Gigabit Ethernet systems.   CFP8 use of a 16x25G electrical interface […]

March 17, 2018

100G Optical Transceivers Q & A

How many form factors for 100G Optical Transceivers? QSFP28: Taking the technology and squeezing down to the familiar QSFP form factor CFP: The first 100G transceiver form factor, CFP’s are larger modules, and were based originally on 10 lanes of 10G CFP2: The successor to the original CFP module, this boasts a higher port density […]

March 15, 2018

IEEE Publishes Standard Specifying 200 Gb/s and 400 Gb/s Ethernet

IEEE, the world’s largest technical professional organization dedicated to advancing technology for humanity, and the IEEE Standards Association (IEEE-SA), today announced the availability of IEEE 802.3bs-2017-Standard Amendment for Media Access Control (MAC) Parameters, Physical Layers and Management Parameters for 200 Gb/s and 400 Gb/s Operation. The new standard amendment addresses the growing diverse bandwidth requirements […]

March 6, 2018

What is DDM or DOM for Optical Transceivers

What Is DDM (Digital Diagnostic Monitoring)? DDM is short for Digital Diagnostic Monitoring, according to the industry standard MSA (Multi-Source Agreement) SFF-8472 and is also known as DOM (Digital Optical Monitoring). When choosing the fiber optic transceivers for your equipment, you can choose transceiver modules with or without DDM/DOM function. Most of fiber optic transceivers […]