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    • 54. 发明授权
    • Bidirectional optical module
    • 双向光模块
    • US07734121B2
    • 2010-06-08
    • US11905254
    • 2007-09-28
    • Junji IidaAkio WatanabeMikio UemuraHideharu Okami
    • Junji IidaAkio WatanabeMikio UemuraHideharu Okami
    • G02F1/295
    • H04B10/40
    • A bidirectional optical module having a device 1 for emitting transmitting signal light, an optical fiber 8 which the transmitting signal light from the device enters, a light-receiving device 9 which light from the optical fiber enters, and a wavelength splitting filter 4. The transmitting signal light emitted from the device is sent forward through the optical fiber, and the receiving signal light is received through the optical fiber. The bidirectional optical module has an optical device (optical isolator) of a reflection polarizer 6 bonded to an end face of the optical fiber, a Faraday rotator 5 disposed integrally on the reflection polarizer and an absorption polarizer 3 disposed on an optical path extending between the device and the filter. The reflection polarizer has a wavelength dependency which functions as a polarizer for the transmitting signal light, but does not function as a polarizer for the receiving signal light.
    • 具有用于发射发射信号光的装置1,来自装置的发射信号光进入的光纤8,来自光纤的光进入的光接收装置9和波分解滤波器4的双向光模块。 发送从装置发出的信号光通过光纤向前发送,接收信号光通过光纤接收。 双向光模块具有接合到光纤端面的反射偏振器6的光学装置(光隔离器),一体地设置在反射偏振器上的法拉第旋转器5和设在光路上的光路 设备和过滤器。 反射偏振器具有用作发射信号光的偏振器的波长依赖性,但不用作接收信号光的偏振器。