Invention Grant
- Patent Title: Optical transmitter with external modulator, optical transceiver including optical transmitter with external modulator, and methods of driving the same
- Patent Title (中): 具有外部调制器的光发射机，具有外部调制器的光发射机的光收发器及其驱动方法
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Application No.: US11727092Application Date: 2007-03-23
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Publication No.: US07672597B2Publication Date: 2010-03-02
- Inventor: Katsuhiro Yutani
- Applicant: Katsuhiro Yutani
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP2006-089386 20060328
- Main IPC: H04B10/04
- IPC: H04B10/04
Abstract:
An optical transmitter with an external modulator includes a light-emitting unit emitting a continuous wave light, a modulation unit modulating the continuous wave light in accordance with an electric signal, a first terminal applying a first positive voltage to a cathode of the light-emitting unit and a cathode of the modulation unit, a second terminal applying a second positive voltage of a constant value to an anode of the light-emitting unit, and a third terminal applying a third positive voltage with the electric signal to an anode of the modulation unit. The second positive voltage is set to a value higher than the first positive voltage, and the third positive voltage is set to a value lower than the first positive voltage.
Public/Granted literature
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