Knowledge Center

Find troubleshooting information and step by step testing instruction to assure the performance and capability of your AddOn products.

How to Perform a Loopback Test for a Fiber Optic Transceiver?

A loopback test is a test in which a loop is created within the same fiber optic transceiver module by connecting the transmit (Tx) port to the receive (Rx) port of the same component.

The difference between FDDI grade, OM1, OM2, OM3, OM4 and OM5

Multi-mode fiber (MMF) is available in many different types which have varying capabilities. This article discusses the differences between the widely available multi-mode fiber types.

What is the difference between an MPO and MTP connector?

The terms MTP and MPO are often times mistaken for the same thing. This article explores the difference between the brand name of "MTP" and the standard "MPO".

Choosing MPO Cables for Network Transceivers

Three factors impact choosing the correct MPO cable for transceivers, keyway orientation, connector ‘gender’, and polarity. To the matters of keyway and connector, the rules are fairly simple.

Can APC Connectors be used in transceivers?

APC, or Angled Physical Contact, is a fiber connector end face. APC connector end faces are angled at 8° to ensure better performance by reducing the light reflected between two connected fibers.

Bidirectional Transceivers

The simplest and most cost-effective solution for increasing utilization of existing fiber infrastructure are Single-Fiber Bidirectional Transceivers. Bidirectional, or “Bidi”, transceivers deliver both the transmit and receive portions of a fiber optic connection on one fiber.

CWDM Transceivers

Course Wavelength Division Multiplexing, or CWDM, is a cost-effective method to scale connections over existing fiber infrastructure. Passive CWDM networks can support point-to-point connections or point-to-multipoint connections for fiber rings or add/drop application.

Passive Multiplexer

A passive mux (short for multiplexer) in most networks consist of a mux and demux optical component. The mux combines, or multiplexes, wavelengths on to a fiber. The demux on the other end of the connection splits, or de-multiplexes, the connections.

Passive WDM Mux Glossary

This is the optical component that combines the Transmit portion of the fiber link on to a fiber. “Mux” is also loosely referred to as device that supports both Multiplexing and Demultiplexing function.

What is an AOC?

Active Optical Cables, or AOCs, are fiber optic cable assemblies, terminated with transceiver housings on each end. AOCs are available in 1 meter to 100 meter lengths, and typically use about 1W of power.

What is a DAC?

Direct Attached Cables, or DACs, are copper cable assemblies made from twinax cable, terminated with transceiver housings on each end. DACs are available in passive or for active variants.

When is a SWDM4 Transceiver the Right Choice?

In simple terms, SWDM4, or SWDM, is a standards-based interface for 40G & 100G connections over a multimode fiber pair, rather than a MPO/MTP connection.