Abstract

We demonstrate optical injection locking (OIL) at record low injection power of $-65\mathrm{dBm}$ using EDFA-based pre-amplification and an electrical phase locked loop (PLL). Investigating the phase noise characteristics of OIL, we find that at low injection powers the slave laser linewidth and injection ratio strongly influence the phase noise of the locked slave output. By introducing an EDFA pre-amplifier, the minimum locking power for OIL is reduced. Moreover, using this pre-amplifier we find that there exists an optimum injection power into the slave where the output phase noise is minimized and is below the phase noise without EDFA. We evaluate an OIL-based pump recovery in a phase sensitive amplifier (PSA) receiver system aimed at free-space communications.

© 2018 Optical Society of America

Optical injection locking based local oscillator regeneration for continuous variable quantum key distribution

Zikang Su, Dajian Cai, Hao Jiang, Jintao Wang, Dawei Wang, Xiaojie Guo, and Zhaohui Li
Opt. Lett. 47(5) 1287-1290 (2022)

Phase-locked, pre-amplified optical injection locking at low input powers

J. Connor Skehan, Magnus Karlsson, and Peter A. Andrekson
Opt. Express 32(2) 1956-1965 (2024)

Inter-channel nonlinear phase noise compensation using optical injection locking

Jokhakar Jignesh, Arthur Lowery, and Bill Corcoran
Opt. Express 26(5) 5733-5746 (2018)

Optical injection locking-based amplification in phase-coherent transfer of optical frequencies

Joonyoung Kim, Harald Schnatz, David S. Wu, Giuseppe Marra, David J. Richardson, and Radan Slavík
Opt. Lett. 40(18) 4198-4201 (2015)

Carrier regeneration from a blockwise phase-switching signal for a frequency comb-based WDM system

Qiulin Zhang and Chester Shu
Opt. Lett. 43(15) 3694-3697 (2018)