Output Characteristics of External-Cavity Mode-Hop-Free Tunable Laser Source in C+L Band

Sun, Jisheng; Qiu, Liqiang; Liu, Lei; Sheng, Liwen; Cui, Yudong; Huang, Lin; Pan, Mengchun; Nian, Fushun; Hu, Jiafei

doi:10.3390/photonics11070677

Open AccessCommunication

Output Characteristics of External-Cavity Mode-Hop-Free Tunable Laser Source in C+L Band

by

Jisheng Sun

^1,2,

Liqiang Qiu

³,

Lei Liu

²,

Liwen Sheng

^2,4,5,*

,

Yudong Cui

⁶,

Lin Huang

^2,4,5,

Mengchun Pan

¹,

Fushun Nian

^2,4,5,* and

Jiafei Hu

¹

College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China

²

Ceyear Technologies Co., Ltd., Qingdao 266555, China

³

Beijing Institute of Control and Electronic Technology, Beijing 100000, China

⁴

Science and Technology on Electronic Test & Measurement Laboratory, Qingdao 266555, China

⁵

Shandong Electronic Test & Measurement Technology Innovation Center, Qingdao 266555, China

⁶

State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China

^*

Authors to whom correspondence should be addressed.

Photonics 2024, 11(7), 677; https://doi.org/10.3390/photonics11070677

Submission received: 22 June 2024 / Revised: 12 July 2024 / Accepted: 19 July 2024 / Published: 21 July 2024

(This article belongs to the Special Issue Emerging Topics in High-Power Laser and Light–Matter Interactions)

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Abstract

Tunable laser sources with a wide wavelength tuning range, mode-hop-free (MHF) operation, and high spectral purity are essential for applications such as high-resolution spectroscopy, coherent detection, and intelligent fiber sensing. In this paper, we present a wide-range tunable laser source that operates without mode hopping, based on external cavity feedback using a semiconductor gain chip as the laser gain medium. The wavelength, power, and spectral characteristics of the laser are experimentally measured. A wide MHF continuous wavelength tuning range from 1480 nm to 1620 nm with a side-mode suppression ratio of more than 61.65 dB is achieved. An output optical power of more than 11.14 dBm with good power stability can also be realized in the full C+L band. This proposed external-cavity tunable laser source features a narrow intrinsic linewidth and MHF tunable radiation with a maximum sweep speed of 200 nm/s, enabling practical applications such as high-resolution vector spectrum analysis.

Keywords: external-cavity; tunable laser source; mode-hop-free; C+L band

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MDPI and ACS Style

Sun, J.; Qiu, L.; Liu, L.; Sheng, L.; Cui, Y.; Huang, L.; Pan, M.; Nian, F.; Hu, J. Output Characteristics of External-Cavity Mode-Hop-Free Tunable Laser Source in C+L Band. Photonics 2024, 11, 677. https://doi.org/10.3390/photonics11070677

AMA Style

Sun J, Qiu L, Liu L, Sheng L, Cui Y, Huang L, Pan M, Nian F, Hu J. Output Characteristics of External-Cavity Mode-Hop-Free Tunable Laser Source in C+L Band. Photonics. 2024; 11(7):677. https://doi.org/10.3390/photonics11070677

Chicago/Turabian Style

Sun, Jisheng, Liqiang Qiu, Lei Liu, Liwen Sheng, Yudong Cui, Lin Huang, Mengchun Pan, Fushun Nian, and Jiafei Hu. 2024. "Output Characteristics of External-Cavity Mode-Hop-Free Tunable Laser Source in C+L Band" Photonics 11, no. 7: 677. https://doi.org/10.3390/photonics11070677

APA Style

Sun, J., Qiu, L., Liu, L., Sheng, L., Cui, Y., Huang, L., Pan, M., Nian, F., & Hu, J. (2024). Output Characteristics of External-Cavity Mode-Hop-Free Tunable Laser Source in C+L Band. Photonics, 11(7), 677. https://doi.org/10.3390/photonics11070677

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Output Characteristics of External-Cavity Mode-Hop-Free Tunable Laser Source in C+L Band

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