Stabilizing DFB laser injection-locked to an external polarization maintaining optical fiber ring cavity
Panyaev, Ivan; Itrin, Pavel; Korobko, Dmitry; Sementsov, Dmitrij; Chapalo, Ivan; Mégret, Patrice; Fotiadi, Andrei A. (2023-05-31)
SPIE
31.05.2023
Ivan Panyaev, Pavel Itrin, Dmitry Korobko, Dmitrij Sementsov, Ivan Chapalo, Patrice Mégret, and Andrei A. Fotiadi "Stabilizing DFB laser injection-locked to an external polarization maintaining optical fiber ring cavity", Proc. SPIE 12572, Optical Sensors 2023, 125721K (31 May 2023); https://doi.org/10.1117/12.2665903
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© (2023) Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.
https://rightsstatements.org/vocab/InC/1.0/
© (2023) Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.
https://rightsstatements.org/vocab/InC/1.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202405284005
https://urn.fi/URN:NBN:fi:oulu-202405284005
Tiivistelmä
Abstract
We report on linewidth narrowing and stabilization of semiconductor DFB laser implemented through its self-injection locking to an external fiber ring cavity in conjunction with an active optoelectronic feedback circuit controlled by a simple low-cost USB-DAQ card. The system enables narrowing of the DFB laser linewidth below ~0.5 kHz and drastically reduced the laser phase noise. Specifically, the laser configuration is fully spliced from the polarization maintaining (PM) single-mode optical fiber that exhibits significantly improved stability against the environment noise. Drastic narrowing of the DFB laser linewidth down to ~310 Hz and a phase noise less than –100 dBc/Hz (<30 kHz) are achieved with the PM fiber ring cavity built from a single fiber coupler. The reported PM laser configuration is of great interest for many laser applications where a narrow sub-kHz linewidth, simple design and low cost are important.
We report on linewidth narrowing and stabilization of semiconductor DFB laser implemented through its self-injection locking to an external fiber ring cavity in conjunction with an active optoelectronic feedback circuit controlled by a simple low-cost USB-DAQ card. The system enables narrowing of the DFB laser linewidth below ~0.5 kHz and drastically reduced the laser phase noise. Specifically, the laser configuration is fully spliced from the polarization maintaining (PM) single-mode optical fiber that exhibits significantly improved stability against the environment noise. Drastic narrowing of the DFB laser linewidth down to ~310 Hz and a phase noise less than –100 dBc/Hz (<30 kHz) are achieved with the PM fiber ring cavity built from a single fiber coupler. The reported PM laser configuration is of great interest for many laser applications where a narrow sub-kHz linewidth, simple design and low cost are important.
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