Fiber-Optic Transceiver Module for Long-Distance Transmission

With the rapid development of the optical communication industry, long-distance optical modules have gradually met the needs of the network for long-distance transmission, and have become more widely used in various fields of global communications. This article will focus on Fiber-Optic Transceiver Module for Long-Distance Transmission.

Introduction

Depending on the transmit optical power and overload optical power, optical transceiver modules are classified into short-distance and long-distance optical modules. Optical signals of different wavelengths can travel different distances. Transmission distances of optical modules are affected by attenuation and dispersion of optical signals during transmission. Generally, a distance of less than 2 km is considered a short transmission distance, a distance of 10 km to 20 km is considered a medium transmission distance, and a distance beyond 20 km is considered a long transmission distance.

 Types of optical transceiver modules for long-distance transmission

Including SFP optical modules, SFP+ optical transceiver modules, XFP optical transceiver modules, 40G optical transceiver modules, 40G optical transceiver modules, 100G optical transceiver modules and so on, Among them, long-distance SFP+ optical transceiver modules use the EML laser and the detector component,which has reduced the power consumption and improves the accuracy of the optical transceiver module with various improvements . The long-distance 40G optical transceiver module adopts a driver and a modulation unit in the transmission link. The optical amplifier and photoelectric conversion unit are used in the link, and the maximum transmission distance can reach 80km, which is far greater than the optical transmission distance of the existing standard 40G pluggable optical transceiver module.

Application

l the port of the switch

l the server's port

l security monitoring areas

l Telecommunications, including data centers, server, etc.

l Ethernet, Fibre Channel , SDH, SONET and so on.

Additional usage considerations

Fiber-Optic Transceiver module for Long-Distance transmission has strict requirements on the range of receiving optical power . If the optical power exceeds the range of the receiving sensitivity, the optical transceiver module may fail. The usage methods and precautions are as follows:

1. Do not connect the jumper immediately after installing the long-distance optical transceiver module to the device. Use the command line display transceiver diagnosis interface to read the light output power of the optical transceiver module. Check transmitted optical power and the received optical power within the normal range . The software usually shows that the received optical power may be -40dB or less when the optical fiber is not connected.

2. If available, the optical power meter can be used to test that the received optical power is within the normal receiving range so that the optical fiber can be connected to the above long-distance optical transceiver module.

3. In any case, Fiber-Optic Transceiver module for long-distance transmission cannot be directly tested by using optical fibers. If necessary, an optical attenuator must be connected so that the received optical power can be tested within the receiving range.

4. When using the long-distance optical transceiver module, the received power must have a certain margin, and the actual received power should be more than 3 dB higher than the receiving sensitivity. If it does not meet ,please add the attenuator.

5, Optical transceiver module can be completely without attenuation in the transmission of 10km, under normal circumstances,it will add attenuation if more than 40km and can not be directly connected, otherwise it is easy to burn ROSA.

Summary

A long-distance fiber-optic transceiver module fully play important role to upgrade telecommunications networks and launch very large data centers,There are numerous optical transceiver modules available in the market differing in the type of data transmission speed.

If you are interested in UTOPTICAL full range of optical transceivers & cables ,please visit :UTOPTICAL Online Store.