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Title: Optical frequency comb generation from a 1.65 µm single-section quantum well laser
Authors: Li, Xiang
Sia, Brian Jia Xu
Wang, Jiawei
Qiao, Zhongliang
Wang, Wanjun
Guo, Xin
Wang, Hong
Liu, Chongyang
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2022
Source: Li, X., Sia, B. J. X., Wang, J., Qiao, Z., Wang, W., Guo, X., Wang, H. & Liu, C. (2022). Optical frequency comb generation from a 1.65 µm single-section quantum well laser. Optics Express, 30(3), 4117-4124.
Project: NRF-CRP12-2013-04 
Journal: Optics Express 
Abstract: Optical frequency combs (OFCs) in the 1.65 µm wavelength band are promising for methane sensing and extended high-capacity optical communications. In this work, a frequency-modulated (FM) OFC is generated from a 1.65 µm single-section quantum well laser. This is characterized by a 1 kHz-wide beatnote signal at ∼19.4 GHz. Typical FM optical spectra are shown and optical linewidth of the OFC narrows through the mutual injection locking process in the comb formation. No distinct pulse train is observed on oscilloscope, which conforms with the FM operation. Furthermore, to add further evidence that four-wave mixing (FWM) is the driving mechanism of the comb formation, FWM frequency conversion characterization is conducted on a semiconductor optical amplifier (SOA) fabricated together with the tested laser. An efficiency of ∼-30 dB confirms the capability of FM mode locking.
ISSN: 1094-4087
DOI: 10.1364/OE.450071
Rights: © 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
TL Journal Articles

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