Invention Grant
- Patent Title: Methods and apparatus for improving the skew tolerance of a coherent optical transponder in an optical communication system
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Application No.: US16712188Application Date: 2019-12-12
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Publication No.: US10917191B2Publication Date: 2021-02-09
- Inventor: Xuan He , Qiang Wang , Yang Yue
- Applicant: Juniper Networks, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Juniper Networks, Inc.
- Current Assignee: Juniper Networks, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Cooley LLP
- Main IPC: H04B10/2507
- IPC: H04B10/2507 ; H04J14/06 ; G02B6/12 ; H04B10/61 ; H04Q11/00

Abstract:
In some embodiments, an apparatus includes a memory and a processor operatively coupled to the memory. The processor is configured to be operatively coupled to a first optical transponder and a second optical transponder. The processor is configured to receive, from the second optical transponder, a signal representing a skew value of an optical signal and a signal representing a bit-error-rate (BER) value of the optical signal. The skew value is associated with a skew between an in-phase component of the optical signal and a quadrature component of the optical signal. The processor is configured to determine, based on at least one of the skew value or the BER value, if a performance degradation of the first optical transponder satisfies a threshold. The processor is configured to send a control signal to the first optical transponder to adjust a pulse shaping or a data baud rate of the first optical transponder.
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