2000•Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIERequires access
High dynamic range analog optical modulator
Paul H. Young, James H. Bechtel
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Abstract
High dynamic range is achieved in the optical domain with our technique thereby providing multi-gigahertz modulation bandwidth. Early measurements show an improvement exceeding 24 dB in third-order intermodulation distortion over that of a single, unlinearized Mach- Zehnder optical modulator. Using this approach, practical measurements at 500 MHz show a spurious-free dynamic range (SFDR) of 105 dB Hz2/3, where the noise floor spectral density is -141.3 dBm/Hz measured at the optical link output.