Patent ID: 8036533
Filing Date: 2011-10-11
Classification: G02B,H04J

Abstract:
1. An optical transmitter module comprising: an optical element mounting substrate in which at least a first light emitting element having a use wavelength of “λ an optical multiplexing/demultiplexing device containing at least a first wavelength selecting filter and a mirror which is separated from said first wavelength selecting filter by a predetermined distance, and is positioned opposite and parallel with respect to said first wavelength selecting filter; wherein: said optical multiplexing/demultiplexing device is fixed on a package for storing thereinto both said optical element mounting substrate and said optical multiplexing/demultiplexing device under such a condition that said optical multiplexing/demultiplexing device is inclined with respect to an element mounting plane of said mounting substrate at an angle of “θ” (note that angle “θ” is not equal to 2Nπ. symbol “N”=0, 1, 2, - - - ); and wherein: first emission light from said first light emitting element is entered to said optical multiplexing/demultiplexing device; the entered first emission light is reflected on said mirror; and the reflected first emitting light is reflected on said first wavelength selecting filter; second emission light from said second light emitting element is entered to said optical multiplexing/demultiplexing device; and said entered second emission light is multiplexed with said reflected first emission light at said first wavelength selecting filter.