OPTICAL TRANSMITTER, PHOTONIC DETECTOR AND PASSIVE OPTICAL NETWORK SYSTEM

摘要

The present application provides an optical transmitter, which includes a tunable laser, a photonic detector and a regulator module which is coupled between the tunable laser and the photonic detector, wherein, a part of the output light of the tunable laser is provided to the photonic detector as detection light. the photonic detector includes: a semiconductor substrate, a photoelectric detection Positive Intrinsic-Negative (PIN) structure, which is located on the semiconductor substrate, an integrated Fabry-Perot (FP) cavity, which includes two reflect planes set on two opposite surfaces of the semiconductor substrate, wherein, the thickness of the semiconductor substrate is used as the cavity length of the integrated FP cavity, and the thickness of the semiconductor substrate makes the transmission peak of the integrated FP locate at a preset target wavelength. The present application further provides a photonic detector and a passive optical network system.