What is a DWDM adjustable optical module?
DWDM tunable optical module is a unique optical module, which can choose the channel or "color" of laser emission. In simple terms, most DWDM systems usually use optical modules with fixed wavelengths, but adjustable optical modules have optical modules that can be used at any time The ability to adjust the wavelength of the optical module to meet different application requirements. It should be noted that the wavelength adjustment function of the DWDM tunable optical module is only used in the DWDM system.
Types of DWDM Adjustable Optical Modules
In today's market, there are mainly two types of DWDM adjustable optical modules.
(1) Adjustable XFP optical module
The tunable XFP optical module consists of an integrated full C-band tunable transmitter and high-performance receiver, the wavelength can be set as default in the 50GH DWDM ITU grid, and the maximum distance of this optical module can reach 80km on single-mode fiber .
(2) Adjustable SFP+ optical module
Adjustable SFP+ optical modules are serial optical devices that can provide high-speed serial links from 9.95Gbps to 11.3Gbps, and the optical modules support the enhanced SFP+ specification.
On the transmit side, serial data is passed from the electronic connector to the modulator driver. Modulator driver modulates C-band cooled tunable transmitter for data transmission up to 80km over single-mode fiber via industry standard LC connector, on the receive side, 10G optical data stream is recovered from the APD to the electronic connector via a transimpedance amplifier .
Advantages of DWDM Adjustable Optical Modules
Adjustable optical modules have developed rapidly in recent years, and they have become popular in DWDM transmission systems because of their multi-faceted capabilities, especially when combined with reconfigurable optical add-drop multiplexers (ROADMs). The dimming module becomes a powerful transmission component. Simply put, DWDM adjustable optical modules have the following advantages.
(1) Wide adjustment range. Compared with common fixed wavelength optical modules, DWDM dimmable optical modules can save a lot of time and money.
(2) By reducing the line width, it is more suitable for 100G systems. The ability to adjust the wavelength provides more convenience for different transmission needs.
(3) Tunable lasers can switch wavelengths within a few nanoseconds. Tunable lasers are an important part of tunable optical modules, a high-speed and high-performance optical device that enables the desired wavelength to be reprogrammed in seconds.
DWDM tunable optical modules can work on various wavelengths and adjust the wavelength according to the needs of users, making it popular in DWDM systems.
