Patent ID: 7248801
Filing Date: 2007-07-24
Classification: G02B,H04B

Abstract:
1. A bidirectional optical communications module for bidirectionally communicating with another party, comprising: a single optical communications path element having an optical communications path in which an optical signal travels; a light-emitting device for transmitting an optical signal by causing light to enter the optical communications path through an end face of the optical communications path element; a light-receiving device for receiving an optical signal by receiving incoming light exiting the optical communications path through the end face of the optical communications path element; a first outgoing light control section which receives, of light emitted by the light-emitting device, first outgoing light to be transmitted and which controls the first outgoing light so that the first outgoing light emitted by the light-emitting device enters the optical communications path through the end face of the optical communications path element; and a second outgoing light control section which receives, of light emitted by the light-emitting device, second outgoing light not to be transmitted and which controls the second outgoing light so that at least part of the second outgoing light enters neither the optical communications path which receives the first outgoing light nor the end face of the optical communications path element, wherein the second outgoing light control section is formed continuously to a periphery of the first outgoing light control section, and the second outgoing light control section guides the second outgoing light outside the end face of the optical communications path element by refracting the second outgoing light.