| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical space transmission system and an optical space transmitter where a noise is reduced without sacrificing requirements such as carrying performance, miniaturization and a low cost so as to enhance a transmission rate. SOLUTION: In this optical space transmission system, one light 611 in two lights 611, 612 whose wavelength differs from each other and that can be identified with each other is modulated by a data signal, and the other light 612 is modulated by an inverted logic signal of the data signal. The two lights 611, 612 that can be identified with each other are received by two photodetectors 651, 652 through wavelength identification filters 641, 642, and an original data signal is recovered from the two lights 611, 612 to eliminate a common mode noise mixed in a transmission path. |
