Optical modules having an improved optical signal to noise ratio

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United States of America Patent

PATENT NO 11929826
APP PUB NO 20190280798A1
SERIAL NO

16189221

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Abstract

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Consistent with the present disclosure, a photonic integrated circuit (PIC) is provided that has 2 N channels (N being an integer). The PIC is optically coupled to N optical fibers, such that each of N polarization multiplexed optical signals are transmitted over a respective one of the N optical fibers. In another example, each of the N optical fibers supply a respective one of N polarization multiplexed optical signals to the PIC for coherent detection and processing. A multiplexer and demultiplexer may be omitted from the PIC, such that the optical signals are not combined on the PIC. As a result, the transmitted and received optical signals incur less loss and amplified spontaneous emission (ASE) noise. In addition, optical taps may be more readily employed on the PIC to measure outputs of the lasers, such as widely tunable lasers (WTLs), without crossing waveguides.

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Patent Owner(s)

Patent OwnerAddress
INFINERA CORPORATIONSAN JOSE CA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Evans, Peter W Mountain House, US 60 851
Kish,, Jr Fred A Palo Alto, US 64 1028
Lal, Vikrant Sunnyvale, US 31 440
Rahn, Jeffrey T Sunnyvale, US 50 426
Reffle, Michael Center Valley, US 11 67

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