| 摘要 |
PURPOSE:To contrive the improvement of the convenience of use and to reduce a cost by interchangeability by constituting the titled transmitter by at least a light emission and reception element common provision type optical multiplexer/ demultiplexer and a switch so as to attain the multiplex transmission of various wavelength by one kind of optical transmitter. CONSTITUTION:In the light emitting/receiving element common provision type optical multiplexer/demultiplexer, light emitting elements 12-1, 12-2 and light receiving elements 13-1, 13-2 suitable for each optical wavelength of plural input/output ports 11a are provided to the port 11a, an input electric signal Si supplied to the input/output port 11a is converted into an optical signal by the elements 12-1, 12-2, sent to a common port 11b, the optical signal coming from the common port 11b is converted into the output electric signal So by the light receiving elements 13-1, 13-2 and outputted from the input/output port 11a. Moreover, switches 16-1, 16-2 switch the input of an input electric signal Si to the light emitting elements 12-1, 12-2 and the output of the output electric signal So from the light emitting elements 13-1, 13-2. Thus, the simultaneous transmission and bidirectional transmission of the optical signal of various wavelengths are attained and the optical transmitters have interchangeability. |
