Optical transmitting or receiving unit integrating a plurality of optical devices each having a specific wavelength different from each other
AssigneeSumitomo Electric Industries, Ltd.
InventorsMorihiro SEKI, Kazushige OKI, Kengo MATSUMOTO
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Abstract
An optical unit is disclosed, in which the optical unit provides four optical devices each of which corresponds to a specific wavelength different from each other. In the transmitter unit, the unit includes two optical modules each including two optical devices and one filter unit with a polarization beam filter. The optical beam form two optical devices are combined by the polarization beam filter, while the optical output from the optical modules are combined with the thin film filter.
Claims15
A transmitter optical unit that emits light with a plurality of specific wavelengths different from each other, comprising:
- a plurality of transmitter optical modules that includes two transmitter optical devices and a polarization beam splitter, said
- transmitter optical devices each emitting light with one of said plurality of said specific wavelengths, said polarization beam splitter merging said light emitted from said transmitter optical devices;
- a WDM unit for multiplexing said merged light output from said plurality of transmitter optical modules;
- and
- a sleeve unit for outputting said multiplexed light.
A receiver optical unit that receives light with a plurality of specific wavelengths different from each other, comprising:
- a sleeve unit for receiving said light;
- a WDM unit for de-multiplexing light that is output from said sleeve unit into a plurality of de-multiplexed light each having two of said specific wavelengths;
- and
- a plurality of receiver optical modules each receiving one of said de-multiplexed light, said receiver optical module including two receiver optical devices and a WDM filter, said WDM filter transmitting a portion of said de-multiplexed light having one of said specific wavelengths and reflecting another portion of said de-multiplexed light having other of said specific wavelengths, one of said receiver optical devices receiving said portion of light transmitted through said WDM filter and other of said receiver optical devices receiving said other portion of said light reflected by said WDM filter.
Dependencies are inferred from the claim text.