OPTICAL FIBER MICROWAVE TRANSMISSION DEVICE AND COMPOSITE OPTICAL FIBER MICROWAVE TRANSMISSION DEVICE

摘要

PROBLEM TO BE SOLVED: To compensate even for a large variation of optical path length by compensating for the phase variation.;SOLUTION: The optical fiber microwave transmission device comprises electro-optical conversion means 1 for outputting modulation light subjected to intensity modulation with an input microwave signal for modulation, an optical part reflector 4 which reflects a part of modulation light output from the electro-optical conversion means 1 via an optical circulator 2 and a transmission optical fiber 3 to the transmission optical fiber 3 and transmitting the remainder, first photoelectric conversion means 5 for converting the modulation light transmitted through the optical part reflector 4 into a first microwave signal, second photoelectric conversion means 6 for converting the modulation light output from the optical part reflector 4 via the transmission optical fiber 3 and the optical circulator 2 into a second microwave signal, and a phase synchronization circuit 8 which generates a microwave signal for modulation on the basis of the phase of the second microwave signal converted by the second photoelectric conversion means 6 and the phase of a reference microwave signal.;COPYRIGHT: (C)2013,JPO&INPIT