Invention Grant
- Patent Title: Three-arm DQPSK modulator
- Patent Title (中): 三臂DQPSK调制器
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Application No.: US12344135Application Date: 2008-12-24
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Publication No.: US08238758B2Publication Date: 2012-08-07
- Inventor: Charles H. Joyner , Scott Corzine , Masaki Kato , Mehrdad Ziari
- Applicant: Charles H. Joyner , Scott Corzine , Masaki Kato , Mehrdad Ziari
- Applicant Address: US CA Sunnyvale
- Assignee: Infinera Corporation
- Current Assignee: Infinera Corporation
- Current Assignee Address: US CA Sunnyvale
- Agent David L. Soltz
- Main IPC: H04B10/04
- IPC: H04B10/04
Abstract:
A modulator is disclosed that includes three arms between a splitter portion and a coupler portion. The modulator typically requires at most a π/2 phase shift between constellation points. Accordingly, the modulator is more efficient and consumes less power.
Public/Granted literature
- US20090220235A1 THREE-ARM DQPSK MODULATOR Public/Granted day:2009-09-03
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