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Creators/Authors contains: "O’Sullivan, Maurice"

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  1. ; ; ; (, Optica Publishing Group)
    We present a novel measurement technique for P-OFDR with a digitally created linear chirp in the transmitter and vector complex optical field detection to measure the Stokes parameters along the fiber. 
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    Free, publicly-accessible full text available January 1, 2026
  2. ; ; ; ; (, Optics Express)
    A high resolution FMCW Lidar system based on a phase-diverse self-homodyne coherent receiver is demonstrated. Using the same linearly chirped waveform for both the transmitted lidar signal and the local oscillator, the self-homodyne coherent receiver performs frequency de-chirping in the photodiodes which significantly simplifies the task of signal processing, and the required receiver bandwidth can be much lower than the signal chirping bandwidth. While only amplitude modulation is required in the lidar transmitter, phase-diverse coherent receiver allows simultaneous detection of target range and velocity through the spectrum of the de-chirped complex waveform. Multi-target detection is also demonstrated experimentally. 
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  3. ; ; ; ; (, Optica Publishing Group)
    We demonstrate 20-channel coherent transmission using a high-power single-section QW FP-laser diode over 78.3 km single mode fiber. The system capability can reach > 4Tb/s with a single laser in the transmitter using polarizations multiplexing. 
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    Full Text Available 
  4. ; ; (, 2023 Optical Fiber Communications Conference and Exhibition (OFC))
    We present a simple technique for in-field determination of fiber types through the measurement of electrostriction effect based on self-phase modulation 
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    Full Text Available