9 June 1992 A 100-Mbps resonant cavity phase modulator for coherent optical communications
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A resonant cavity electro-optic phase modulator has been designed and implemented to operate at a data rate of 100 Mbps. The modulator consists of an electro-optic crystal located in a highly resonant cavity. The cavity is electro-optically tuned on and off resonance, and the phase dispersion near the cavity resonance provides the output phase modulation. The performance of the modulator was measured by first heterodyne detecting the signal to an intermediate frequency and then measuring the spectral characteristics using an RF spectrum analyzer. The measured phase shift is shown to be in good agreement with the theoretical predictions.
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Chien-Chung Chen, Chien-Chung Chen, Deborah L. Robinson, Deborah L. Robinson, Hamid Hemmati, Hamid Hemmati, } "A 100-Mbps resonant cavity phase modulator for coherent optical communications", Proc. SPIE 1635, Free-Space Laser Communication Technologies IV, (9 June 1992); doi: 10.1117/12.59280; https://doi.org/10.1117/12.59280

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