| 摘要 |
PURPOSE:To improve the operability and to reduce cost by switching an input electrical signal by a first switch circuit then inputting it, and switching an output electrical signal by a second switch circuit then outputting it. CONSTITUTION:In the titled transmitter which executes two-way multiplex transmission of an optical signal by using a single core fiber, the switch circuits 30-11, 30-12, 30-21, 30-22 are switched by using two pieces of optical transmitters 20-1, 20-2 of the same constitution and the single core optical fiber 21. Therefore, the transmitters 20-1, 20-2 mutually have interchangeability because two optical signals of wavelengths 1, 2 can be multiplex-transmitted in both directions, hence one kind of transmitters only are necessary to be prepared. As a result, the operability can be improved, and the cost of the system can be reduced. Also, by containing the components of the optical transmitters 20-1, 20-2 respectively in one module, the transmitters can be miniaturized. |
