Self-Locking of Free-Running DFB Lasers to a Single Microring Resonator for Dense WDM

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

View graph of relations

Author(s)

  • Yonghang Sun
  • James Salamy
  • Caitlin E. Murray
  • Brent E. Little
  • Roberto Morandotti
  • Arnan Mitchell
  • David J. Moss
  • Bill Corcoran

Related Research Unit(s)

Detail(s)

Original languageEnglish
Journal / PublicationJournal of Lightwave Technology
Publication statusOnline published - 8 Nov 2024

Abstract

We self-injection locked two free-running DFB lasers to two adjacent resonances of microring resonators (MRRs) to enhance the lasers frequency spacing stability. The frequency spacing stability between the two locked lasers was <300MHz while locking to a ∼0.5 million Q microring with ∼ 19.6GHz free spectral range (FSR), improving to <100MHz level after locking to a ∼1.5 million Q microring with ∼ 25.2GHz FSR. The locked lasers were modulated with dual polarisation 16-QAM signals with <1GHz guard-band between two channels, and the MRR locked DFB lasers achieved similar performance to commercial external cavity lasers in the coherent communication system © 2024 IEEE.

Research Area(s)

  • coherent communication, dense WDM, DFB, distributed feedback laser, DWDM, ECL, external cavity laser, microring resonator, MRR, Optical injection locking, self-injection locking, uDWDM, ultra-dense WDM, wavelength division multiplexing, WDM

Citation Format(s)

Self-Locking of Free-Running DFB Lasers to a Single Microring Resonator for Dense WDM. / Sun, Yonghang; Salamy, James; Murray, Caitlin E. et al.
In: Journal of Lightwave Technology, 08.11.2024.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review