Journal ArticleDOI
Research on tunable local laser used in ground-to-satellite coherent laser communication
TLDR
In this paper, a local laser based on modulation-sideband injection locking is proposed to realize homodyne reception and Doppler frequency shift tracking in ground-to-satellite coherent laser communication.Abstract:
In order to realize homodyne reception and Doppler frequency shift tracking in ground-to-satellite coherent laser communication, a local laser is experimentally demonstrated in this Letter. It is realized based on modulation-sideband injection locking, and has a 10 GHz tuning range, a 1 THz/s tuning rate, a 5 kHz linewidth, and 16 mW of output power. When applied to a Costas loop in a coherent laser communication system, the local laser can achieve ±5 GHz Doppler frequency shift tracking with a 20 MHz/s frequency shift rate, which is sufficient for the ground-to-satellite coherent laser communication.read more
Citations
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Journal ArticleDOI
High spatial resolution phase-sensitive optical time domain reflectometer with a frequency-swept pulse
TL;DR: The proposed FSP ϕ-OTDR uses optical pulses with linear frequency modulation with higher pulse energy for longer sensing fiber and uses matched filter in the receiver to compress the processed pulse width, so the contradiction between spatial resolution and the working distance in ordinary ϕ -OTDR is relaxed.
Journal ArticleDOI
Subkilohertz linewidth reduction of a DFB diode laser using self-injection locking with a fiber Bragg grating Fabry-Perot cavity
Fang Wei,Fei Yang,Xi Zhang,Dan Xu,Meng Ding,Li Zhang,Dijun Chen,Haiwen Cai,Zujie Fang,Gu Xijia +9 more
TL;DR: A commercial distributed feedback diode laser is self-injection locked to the resonance transmission peaks of a fiber Bragg grating Fabry-Perot cavity through a polarization-maintaining fiber ring with the optical path length of 4 m, suitable for advanced applications requiring a narrow linewidth laser with ultralow frequency noise.
Journal ArticleDOI
Self-injection-locking linewidth narrowing in a semiconductor laser coupled to an external fiber-optic ring resonator
Dmitry A. Korobko,Igor O. Zolotovskii,Krassimir Panajotov,Vasily V. Spirin,Andrei A. Fotiadi,Andrei A. Fotiadi +5 more
TL;DR: In this paper, a theoretical framework for modeling a semiconductor laser coupled to an external fiber-optic ring resonator is developed, which is capable of describing the main features of the experimentally measured laser outputs such as laser line narrowing, spectral shape of generated radiation, mode-hoping instabilities and makes possible exploring the key physical mechanisms responsible for the laser operation stability.
Journal ArticleDOI
Sub-kHz-Linewidth Wavelength-Tunable Single-Frequency Ring-Cavity Fiber Laser for C- and L-Band Operation
Linhuan Huang,Changsheng Yang,Tianyi Tan,Wei Lin,Zhitao Zhang,Kaijun Zhou,Qilai Zhao,Xiaodan Teng,Shanhui Xu,Zhongming Yang +9 more
TL;DR: In this paper, a sub-kHz-linewidth wavelength-tunable single-frequency ring-cavity fiber laser operating in C- and L-band is demonstrated experimentally.
Journal ArticleDOI
Homodyne coherent optical receiver for intersatellite communication.
TL;DR: A high-sensitivity homodyne coherent optical receiver with robust adaptive capacity to received-power fluctuation is demonstrated and it is demonstrated that the receiver can track a Doppler shift at the speed of 100 MHz/s.
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