Invention Grant
- Patent Title: Low-noise, switchable RF-lightwave synthesizer
- Patent Title (中): 低噪声,可切换的射频光波合成器
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Application No.: US10417011Application Date: 2003-04-16
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Publication No.: US06963442B2Publication Date: 2005-11-08
- Inventor: Daniel Yap , Yiu-Man So
- Applicant: Daniel Yap , Yiu-Man So
- Applicant Address: US CA Malibu US MA Lexington
- Assignee: HRL Laboratories, LLC,Raytheon Company
- Current Assignee: HRL Laboratories, LLC,Raytheon Company
- Current Assignee Address: US CA Malibu US MA Lexington
- Agency: Ladas & Parry LLP
- Main IPC: G02F2/00
- IPC: G02F2/00 ; H01S5/40 ; G02F2/02 ; H01S3/13 ; H04B10/04

Abstract:
A frequency synthesizer for generating a multiple tone lightwave signal that can be converted into an RF carrier or local oscillator signal. The frequency synthesizer comprises a multiple mode master laser, two slave lasers injection-locked to the master laser, an optical coupler coupling the optical outputs of the two slave lasers, which produces an optical heterodyne output. The frequency synthesizer further comprises a homodyne phase-lock loop providing feedback control over one of the slave lasers and a heterodyne phase-lock loop providing feedback control over the other slave laser. A local oscillator selector is used to select the optical mode to which one of the slave lasers is locked, thus providing selection of the frequencies of the heterodyne output.
Public/Granted literature
- US20030197917A1 Low-noise, switchable RF-lightwave synthesizer Public/Granted day:2003-10-23
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