What is the difference between single fiber and dual fiber optical modules?

What is the difference between single fiber and dual fiber optical modules?

In recent years, with the rapid development of networks, optical modules have become an essential part of fiber optic communication. Optical modules are important components for achieving the conversion between light and electricity during the transmission process of optical signals. Optical modules can be divided into single fiber and dual fiber. So, what is the difference between single fiber and dual fiber optical modules?

1. Different ports

What is the difference between single fiber and dual fiber optical modules? Firstly, a single fiber optical module only has one optical port, and inserting only one fiber can transmit and receive optical signals. A dual fiber optical module is an optical module with two ports, where one fiber needs to be inserted for transmitting and receiving optical signals. TX is the transmitting port for transmitting optical signals, and RX is the receiving port for receiving optical signals.

2. Different wavelengths

What is the difference between single fiber and dual fiber optical modules? Secondly, the second important difference between single fiber and dual fiber optical modules is the wavelength. The wavelengths of single fiber optical modules are further distinguished by gigabits and 10 gigabits.

The conventional wavelengths of gigabit single fibers include TX1310/RX1550nm, TX1550/RX1310nm, TX1490/RX1550nm, TX1550/RX1490nm, TX1310nm/Rx1490nm, TX1490nm/Rx1310nm, and the wavelengths of tens of 10G single fibers include TX1270nm/RX1330nm, TX1330nm/RX1270nm, TX1490nm/RX1550nm, and TX1550nm/RX1490nm.

The wavelengths of the dual fiber optical module include 850nm, 1310nm, and 1550nm.

3. Different rates

What is the difference between single fiber and dual fiber optical modules? Thirdly, the rates of single fiber optical modules and dual fiber optical modules are different. In general, single fiber optical modules are more widely used than dual fiber optical modules in the 100, gigabit, and 10 Gigabit speed ranges, but their applications in high-speed transmission are not as widespread.