IEEE Photonics Technology Letters
IEEE Photonics Technology Letters
5 years ago

Pulsed Sagnac Loop Phase-Modulated Microwave Photonic Link

Yifei Li, Ding Ding, Jeffrey Rodriguez,
We present a novel Sagnac loop phase-modulated microwave photonic link with a pulsed optical source. Unlike a conventional Sagnac loop, the optical phase offset of the loop can be adjusted to quadrature by applying a synchronized modulation signal to an in-loop phase shifting phase modulator. Thereby, it exemplifies the fundamental RF response. With balanced detection, a proof-of-concept link demonstrated an output noise floor of −164 dBm/Hz, which is ~4 dB above the shot noise floor, and a spurious free dynamic range of 104.8 dB Hz2/3.

Publisher URL: http://ieeexplore.ieee.org/document/8249799

DOI: 8249799

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