High-power and ultranarrow DFB laser: the effect of linewidth reduction systems on coherence length and interferometer noise

Cliche, J. F.; Allard, Martin; Têtu, M.

doi:10.1117/12.665675

Cited by 27 publications

(9 citation statements)

References 15 publications

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“…Cranch stabilized a DFB EDFL onto a 100 m path imbalance MZI using homodyne electronics and PZT actuator, reaching about 2 Hz 2 /Hz at 1 kHz [6]. The method was also applied to diode lasers with all-fibered interferometers using homodyne detection leading to 10 2 Hz 2 /Hz at 10 kHz [10]. Extension of the control bandwidth using a sophisticated controller design was achieved with a 10 km arm imbalance Michelson interferometer [9].…”

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confidence: 99%

Ultralow-frequency-noise stabilization of a laser by locking to an optical fiber-delay line

et al. 2009

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We report the frequency stabilization of an erbium-doped fiber distributed-feedback laser using an all-fiber-based Michelson interferometer of large arm imbalance. The interferometer uses a 1 km SMF-28 optical fiber spool and an acousto-optic modulator allowing heterodyne detection. The frequency-noise power spectral density is reduced by more than 40 dB for Fourier frequencies ranging from 1 Hz to 10 kHz, corresponding to a level well below 1 Hz2/Hz over the entire range; it reaches 10(-2) Hz2/Hz at 1 kHz. Between 40 Hz and 30 kHz, the frequency noise is shown to be comparable to the one obtained by Pound-Drever-Hall locking to a high-finesse Fabry-Perot cavity. Locking to a fiber delay line could consequently represent a reliable, simple, and compact alternative to cavity stabilization for short-term linewidth reduction.

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confidence: 99%

Ultralow-frequency-noise stabilization of a laser by locking to an optical fiber-delay line

et al. 2009

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“…The linewidth due to the white noise can be as low as 1 Hz in the YAG laser with a kHz-level measured linewidth [14]. A typical spectral linewidth of a highly-coherent fiber laser ranges from 1 kHz to 100 kHz while the white noise contributed linewidth is 100-1000 Hz [15]. The following analysis demonstrates that the intermodulation effect due to the laser frequency noise mainly results from the white noise.…”

Section: Laser Frequency Noisementioning

confidence: 78%

Laser frequency noise induced error in resonant fiber optic gyro due to an intermodulation effect

Yan

Wang

et al. 2015

Opt. Express

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For the first time, a significant noise source in the resonant fiber optic gyroscope (RFOG) called intermodulation induced error is proposed and deeply analyzed in this paper. The intermodulation error is produced by the laser frequency noise at even multiples of the modulation frequency due to an intermodulation effect, which will seriously limit the random noise performance of the RFOG. Experiments are designed and conducted to verify and measure the intermodulation induced error in the RFOG. The experimental results confirm the existence of intermodulation error, and fit well with the theory. As for the design of the RFOG, light sources with a narrow intrinsic linewidth and a high modulation frequency are preferable to achieve a high rotation-rate sensitivity.

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“…An alternative method is to use a two arm (Michelson or Mach-Zehnder) interferometer to measure the frequency fluctuations during a fixed time delay [8][9][10][11]. This method requires a relatively large arm imbalance to obtain sufficient frequency-discriminator sensitivity.…”

Section: Introductionmentioning

confidence: 99%

An ultra-low frequency noise agile laser

Haboucha

Jiang

Kéfélian

et al. 2010

2010 IEEE International Frequency Control Symposium

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We report on a fiber-stabilized agile laser with ultralow frequency noise. The frequency noise power spectral density (PSD) is comparable to the one of an ultra-stable cavity stabilized laser at Fourier frequencies higher than 30 Hz. When it is chirped at a constant rate of ~ 40 MHz/s, the max nonlinearity frequency error is about 50 Hz peak to peak over more than 600 MHz tuning range. When the laser is chirped, the Rayleigh backscattering (RBS) is a significant frequency noise source related to fiber length, chirping rate and the power imbalance of the interferometer arms. We analyze both theoretically and experimentally this effect and put forward the noise reduction techniques.I.

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High-power and ultranarrow DFB laser: the effect of linewidth reduction systems on coherence length and interferometer noise

Cited by 27 publications

References 15 publications

Ultralow-frequency-noise stabilization of a laser by locking to an optical fiber-delay line

Ultralow-frequency-noise stabilization of a laser by locking to an optical fiber-delay line

Laser frequency noise induced error in resonant fiber optic gyro due to an intermodulation effect

An ultra-low frequency noise agile laser

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