Twin 2x9 Wavelength Selective Switch (WSS) Module is an advanced optical device that integrates two independent 1x9 WSS units into a single compact package. This design is tailored for wavelength division multiplexing (WDM) systems, particularly in reconfigurable optical add-drop multiplexer (ROADM) architectures, offering enhanced flexibility and efficiency in managing optical signals. Let’s break down its functionality, structure, and applications.

Features
Supports both Mux and Demux functions.
Default software interface is 6.25GHz Slice mode, supporting both 6.25GHz and 12.5GHz Slice.
Channel bandwidth range: 37.5GHz to 500GHz.
Operating wavelength range: 191.15THz to 196.075THz.
Module dimensions (L × W × H): 167mm × 110mm × 19.5mm.
IN1, OUT1, IN2, OUT2, AM01~AM09, DM01~DM09, optical interface is LC/UPC, fiber length 295 ± 40mm

Applications
Colorless, Directionless, Flexgrid ROADM
Single/Multiple Channel Routing, Attenuating