Patent ID: 6215917
Filing Date: 2001-04-10
Classification: H04B

Abstract:
An optical signal transmitter-receiver module comprising:a light emitting element having an optical waveguide layer that allows a first optical signal and a second optical signal to propagate therethrough, a core layer that is formed in said optical waveguide layer and generates said first optical signal, a clad layer that is formed in said optical waveguide layer and allows said second optical signal to pass therethrough, a front face that emits the light propagating through said optical waveguide layer and receives the light emitted from an optical transmission means, and a backside face that emits the light having propagated through said optical waveguide layer;a first light receiving element having a front face through which the light emitted from the backside face of said light emitting element comes in, and said second optical signal incident thereon is received; anda substrate on which said light emitting element and said first light receiving element are installed.