Linearized frequency-swept laser source generation based on pre-distortion and optical phase-locked loop

Yan Xu; Jie Qin; Weilin Xie; Qian Zhou; Yi Dong; Weisheng Hu

doi:10.3788/CJL201643.0202002

Linearized frequency-swept laser source generation based on pre-distortion and optical phase-locked loop

Yan Xu, Jie Qin, Weilin Xie, Qian Zhou, Yi Dong^*, Weisheng Hu

^*Corresponding author for this work

Shanghai Jiao Tong University

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Linearly frequency-swept laser source is widely used in high spatial resolution, precision and dynamic range light measuring and optic fiber sensor. However, the frequency-swept nonlinearity and the phase noise of the laser source limit the system spatial resolution, precision and dynamic range. The mechanism of the nonlinearity and phase noise in frequency-swept distributed feedback (DFB) semiconductor laser is analyzed, the combination of pre-distortion and optical phase-locked loop is proposed to overcome the nonlinearity of the frequency sweep, and the phase noise of the laser source is suppressed. Chirp of 50 GHz is achieved where the root mean square frequency error is less than 263 kHz. And the performance of the frequency-swept laser source linearity and coherence enhancement is demonstrated.

Original language	English
Article number	0202002
Journal	Zhongguo Jiguang/Chinese Journal of Lasers
Volume	43
Issue number	2
DOIs	https://doi.org/10.3788/CJL201643.0202002
Publication status	Published - 10 Feb 2016
Externally published	Yes

Keywords

Frequency-swept nonlinearity
Lasers
Linearly frequency-swept laser source
Optical phase-locked loop
Pre-distortion

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10.3788/CJL201643.0202002

Cite this

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title = "Linearized frequency-swept laser source generation based on pre-distortion and optical phase-locked loop",

abstract = "Linearly frequency-swept laser source is widely used in high spatial resolution, precision and dynamic range light measuring and optic fiber sensor. However, the frequency-swept nonlinearity and the phase noise of the laser source limit the system spatial resolution, precision and dynamic range. The mechanism of the nonlinearity and phase noise in frequency-swept distributed feedback (DFB) semiconductor laser is analyzed, the combination of pre-distortion and optical phase-locked loop is proposed to overcome the nonlinearity of the frequency sweep, and the phase noise of the laser source is suppressed. Chirp of 50 GHz is achieved where the root mean square frequency error is less than 263 kHz. And the performance of the frequency-swept laser source linearity and coherence enhancement is demonstrated.",

keywords = "Frequency-swept nonlinearity, Lasers, Linearly frequency-swept laser source, Optical phase-locked loop, Pre-distortion",

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T1 - Linearized frequency-swept laser source generation based on pre-distortion and optical phase-locked loop

AU - Xu, Yan

AU - Qin, Jie

AU - Xie, Weilin

AU - Zhou, Qian

AU - Dong, Yi

AU - Hu, Weisheng

PY - 2016/2/10

Y1 - 2016/2/10

N2 - Linearly frequency-swept laser source is widely used in high spatial resolution, precision and dynamic range light measuring and optic fiber sensor. However, the frequency-swept nonlinearity and the phase noise of the laser source limit the system spatial resolution, precision and dynamic range. The mechanism of the nonlinearity and phase noise in frequency-swept distributed feedback (DFB) semiconductor laser is analyzed, the combination of pre-distortion and optical phase-locked loop is proposed to overcome the nonlinearity of the frequency sweep, and the phase noise of the laser source is suppressed. Chirp of 50 GHz is achieved where the root mean square frequency error is less than 263 kHz. And the performance of the frequency-swept laser source linearity and coherence enhancement is demonstrated.

AB - Linearly frequency-swept laser source is widely used in high spatial resolution, precision and dynamic range light measuring and optic fiber sensor. However, the frequency-swept nonlinearity and the phase noise of the laser source limit the system spatial resolution, precision and dynamic range. The mechanism of the nonlinearity and phase noise in frequency-swept distributed feedback (DFB) semiconductor laser is analyzed, the combination of pre-distortion and optical phase-locked loop is proposed to overcome the nonlinearity of the frequency sweep, and the phase noise of the laser source is suppressed. Chirp of 50 GHz is achieved where the root mean square frequency error is less than 263 kHz. And the performance of the frequency-swept laser source linearity and coherence enhancement is demonstrated.

KW - Frequency-swept nonlinearity

KW - Lasers

KW - Linearly frequency-swept laser source

KW - Optical phase-locked loop

KW - Pre-distortion

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JO - Zhongguo Jiguang/Chinese Journal of Lasers

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Linearized frequency-swept laser source generation based on pre-distortion and optical phase-locked loop

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