Current Research Topics

Papers are posted under respective research areas.

Photonic Devices and Subsystems

  • Optical frequency comb generators using resonator-enhanced electro-optic modulation.
  • Multimode and multi-core optical fibers, amplifiers and mode couplers.
  • Optimization-based design methods.

    Single-Mode Fibers: Communications and Signal Processing

  • Ultra-long-haul submarine systems: optimized optical amplification and spatial multiplexing.
  • Data center systems: 3- and 4-D modulation/detection/coding methods.
  • Data center systems: frequency comb-based coherent links.

    Multimode Fibers: Propagation Physics, Communications and Signal Processing

  • Ultra-long-haul spatially multiplexed systems: statistics of coupled modal gains and group delays.
  • Ultra-long-haul spatially multiplexed systems: detection and signal processing techniques to mitigate mode-dependent gain and group delay spread.

    Multimode Fibers: Endoscopic Imaging

  • Graded-index fibers and rod lenses for image relay systems.

    Free-Space Optical Communications

  • Optimal mode sets for atmospheric turbulence channels.
  • Multiplexing, diversity and detection methods for turbulence channels.

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    Last modified: March 3, 2025.