Heterodyne optical phase-locked loop by confocal Fabry-Periotcavity coupled AlGaAs lasers |
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Authors: | Shin C.-H. Ohtsu M. |
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Affiliation: | Graduate Sch. at Nagatsuta, Tokyo Inst. of Technol., Yokohama; |
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Abstract: | Two external confocal Fabry-Perot cavity-coupled 0.83-μm AlGaAs lasers phase-locked to one another by a heterodyne optical phase-locked loop are discussed. The phase error under phase-locking conditions was measured using the square root of the Allan variance. The result confirmed that the heterodyne signal was a full replica of the spectrum of the reference RF signal within the loop bandwidth. The estimated phase-error variance was 0.02 rad2, i.e. ≃8.1° |
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