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MULTI-CHANNEL OPTICAL TRANSCEIVER MODULE INCLUDING THERMAL ARRAYED WAVEGUIDE GRATING MULTIPLEXER AND ATHERMAL ARRAYED WAVEGUIDE GRATING DEMULTIPLEXER
MULTI-CHANNEL OPTICAL TRANSCEIVER MODULE INCLUDING THERMAL ARRAYED WAVEGUIDE GRATING MULTIPLEXER AND ATHERMAL ARRAYED WAVEGUIDE GRATING DEMULTIPLEXER
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机译:多通道光学收发器模块,包括热阵列波导光栅多路复用器和热阵列波导光栅多路复用器
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摘要
A multi-channel optical transceiver includes a transmitter optical subassembly (TOSA) with a thermal arrayed waveguide grating (AWG) for multiplexing optical signals and a receiver optical subassembly (ROSA) with an athermal AWG for demultiplexing optical signals. The TOSA may also include a laser array optically coupled to the thermal AWG and a temperature control system thermally coupled to the laser array and the thermal AWG to control temperature for wavelength tuning. The temperature control system in the TOSA may include a thermoelectric cooler (TEC) that cools both the laser array and the thermal AWG. Because the athermal AWG in the ROSA is temperature independent, the ROSA does not include a TEC, thereby reducing power consumption and conserving space. The optical transceiver may be used in a wavelength division multiplexed (WDM) optical system, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON).
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