Optical transceiver module with dual band pass WDM coupler embedded therein

An optical transceiver module having a dual band pass wavelength division multiplexing (WDM) coupler embedded therein, the optical transceiver module comprising:

• the dual band pass WDM coupler including a common port, a C lens converting optical signals input to the common port into parallel light, a dual band pass WDM filter passing an optical signal having a specific wavelength among the optical signals converted into the parallel light by the C lens and reflecting optical signals having other wavelengths, and a reflection port allowing the optical signals reflected by the dual band pass WDM filter and concentrated by the C lens to be incident thereon and to be output therefrom;
• an optical transmitting unit outputting a transmission signal;
• a parallel light lens converting the transmission signal output from the optical transmitting unit into parallel light;
• a WDM filter installed to be inclined with respect to a moving direction of the transmission signal converted into the parallel light by the parallel light lens, to thereby pass the transmission signal converted into the parallel light and reflect the optical signal having the specific wavelength passing through the dual band pass WDM filter;
• and
• an optical receiving unit receiving the optical signal having the specific wavelength reflected by the WDM filter,
• wherein the dual band pass WDM filter passes the transmission signal passing through the WDM filter, and the C lens concentrates the transmission signal passing through the dual band pass WDM filter to allow the concentrated transmission signal to be incident on the common port,
• wherein the optical signal having the specific wavelength and the transmission signal have different wavelengths,
• wherein the dual band pass WDM filter provides separate pass bands for selectively passing only the optical signal having the specific wavelength and the transmission signal.