Patent ID: 6166839
Filing Date: 2000-12-26
Classification: H04B

Abstract:
An optical transmitting apparatus for use with a plurality of light transmitting paths, the optical transmitting apparatus comprising:one or more transmission data light emitters operable to convert transmission data formed by at least one signal to an optical data signal and to emit the optical data signal to a respective one of the light transmitting paths;an identification level output circuit operable to output identification level information indicative of levels of the optical data signal that correspond to logical levels of the transmission data; andan identification level light emitter operable to convert the identification level information to an identification level optical signal and to emit the identification level optical signal to another of the light transmitting paths; anda bias circuit operable to apply a bias current to the transmission data such that all logical levels of the transmission data are greater than a lowest level at which said one or more transmission data light emitters can emit light within a range of operating temperatures of the optical transmitting apparatus.