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Continuously tunable, narrow-linewidth laser based on a semiconductor optical amplifier and a linearly chirped fiber Bragg grating
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics. Centre for Optical and Electromagnetic Research (COER), State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, 310058, China.
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics.
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics. Department of Fiber Optics, RISE Acreo, Kista, 164 40, Sweden.
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2019 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 27, no 10, p. 14213-14220Article in journal (Refereed) Published
Abstract [en]

We describe a simple, narrow-linewidth, tunable fiber-based laser with a high degree of tuning accuracy. A polarization independent semiconductor optical amplifier (SOA) is used as the gain medium in a unidirectional fiber ring cavity with a circulator connected to a 6-meter long chirped fiber Bragg grating (CFBG). The laser wavelength is chosen by setting the modulation frequency of the SOA the same as the harmonics of the fundamental repetition rate of the light reflected at a specific point on the CFBG. Careful management of the drive current and pulse width helps to generate laser light of narrow linewidth (less than 0.03 nm) with low power variation (1.46 dB) over a tuning range of 40 nm.

Place, publisher, year, edition, pages
Optical Society of America, 2019. Vol. 27, no 10, p. 14213-14220
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-252757DOI: 10.1364/OE.27.014213ISI: 000469220500055PubMedID: 31163873Scopus ID: 2-s2.0-85065826170OAI: oai:DiVA.org:kth-252757DiVA, id: diva2:1320933
Note

QC 20190610

Available from: 2019-06-06 Created: 2019-06-06 Last updated: 2019-10-09Bibliographically approved

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