Bidirectional transceiver and method for driving the same

A method for operating a bi-directional transceiver module, in order to transmit a transmitting optical signal and a receiving optical signal simultaneously through a piece of optical fiber, said module including:

• a 1.3 μm Distributed Bragg Reflection Laser Diode (DBR LD), which includes an active layer which performs light-emission in response to a light at 1.3 μm and a DBR mirror formed near the active layer;
• a monitoring Photo-Diode (PD), which has a predetermined energy band gap to absorb a light with a wavelength of 1.3 μm and transmits a light with a wavelength of 1.55 μm;
• an optical signal detection PD, which has a predetermined energy band gap to absorb a signal with a wavelength of 1.55 μm;
• an insulated area, which electrically isolates the 1.3 μm DBR LD;
• the monitoring PD;
• and the optical signal detection PD, respectively;
• a p-electrode, which is formed in the 1.3 μm DBR LD, the monitoring PD, and the optical signal detection PD, respectively;
• and
• a n-electrode, which is a common electrode;
• the method comprising:
• applying a forward bias (+) to the p-electrode formed on the 1.3 μm DBR LD;
• applying a backward bias (−) to the p-electrode formed on the monitoring PD and the optical signal detection PD;
• and grounding the n-electrode.