PWDM （Passive Wavelength-Division Multiplexing）is used for packaging of optical module. It can realize the multiplexing of two communication signal, which expands the capacity of single fiber and achieves bi-directional communication. It is widely used in optical network upgrade and expansion, or introducing new comprehensive business (CATV, TELECOM, integration of three networks-PON+EOC) etc.

• CATV System
• Channel Monitoring
• FTTx System
• Optical Line Proection