High-precision narrow laser linewidth measurement based on coherent envelope demodulation
Sign Up to like & getrecommendations! Published in 2019 at "Optical Fiber Technology"
DOI: 10.1016/j.yofte.2019.03.024
Abstract: Abstract This paper presents a novel method for high-precision narrow laser linewidth measurement through demodulating the coherent envelope of the short delayed self-heterodyne interferometry spectrum. Our method based on short delayed self-heterodyne interferometry can ignore… read more here.
Keywords: high precision; linewidth measurement; laser linewidth; precision narrow ... See more keywords
Precise laser linewidth measurement by feature extraction with short-delay self-homodyne.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.452309
Abstract: We propose a precision measurement method of laser linewidth based on short-delay self-homodyne, using the second peak-valley difference (SPVD) feature of the coherent power spectrum to fit laser linewidth. The SPVD model of the self-homodyne… read more here.
Keywords: self homodyne; laser; short delay; linewidth measurement ... See more keywords
Researching pointing error effect on laser linewidth tolerance in space coherent optical communication systems.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.447408
Abstract: In order to evaluate the pointing error effect on laser linewidth tolerance in a space coherent optical communication system, we derive a closed-form bit error rate (BER) model for binary phase-shift-keying (BPSK) modulation and heterodyne… read more here.
Keywords: pointing error; linewidth tolerance; error; laser linewidth ... See more keywords
Narrow laser-linewidth measurement using short delay self-heterodyne interferometry.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.455028
Abstract: Delayed self-heterodyne interferometry is a commonly used technique for the measurement of laser linewidth. It typically requires the use of a very long delay fiber when measuring narrow linewidth (especially linewidths in the kHz-range) lasers.… read more here.
Keywords: laser linewidth; heterodyne interferometry; delay; self heterodyne ... See more keywords
Accurate evaluation of self-heterodyne laser linewidth measurements using Wiener filters.
Sign Up to like & getrecommendations! Published in 2023 at "Optics express"
DOI: 10.1364/oe.485866
Abstract: Self-heterodyne beat note measurements are widely used for the experimental characterization of the frequency noise power spectral density (FN-PSD) and the spectral linewidth of lasers. The measured data, however, must be corrected for the transfer… read more here.
Keywords: laser linewidth; noise; laser; self heterodyne ... See more keywords
Semiconductor laser linewidth reduction by six orders of magnitude via delayed optical feedback.
Sign Up to like & getrecommendations! Published in 2017 at "Optics letters"
DOI: 10.1364/ol.42.000163
Abstract: We demonstrate a coherence increase by six orders of magnitude of a standard quantum well semiconductor laser. Using a simple, optical-fiber-based feedback scheme, we stabilize the laser in a high-gain mode of a long external… read more here.
Keywords: laser; semiconductor laser; mode; six orders ... See more keywords