Optical device, an optical transceiver and a network node
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United States of America Patent
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Jan 23, 2018
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app pub date -
Jun 19, 2014
filing date -
Jun 19, 2014
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Abstract
An optical device comprising, an optical input and output device comprising a first input port, a second input port, a first output port and a second output port, and an optical filtering device comprising an input port coupled to the first output port and an output port coupled to the second input port, and an optical amplifying device comprising an input port coupled to the second output port. The optical input and output device is adapted to couple the output port comprised in the optical filtering device to the input port comprised in the optical amplifying device. The optical filtering device comprises a multiple of cascaded phase shifted Bragg gratings, each being adapted to filter an associated respective optical carrier within to produce a respective output signal to the optical amplifying device.
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