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C-cavity fiber laser employing a chirped fiber Bragg grating for electrically gated wavelength tuning
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics. (Laserfysik)ORCID iD: 0000-0003-1398-9682
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics. (laserfysik)ORCID iD: 0000-0001-7688-1367
Proximion AB, Skalholtsgatan 10, SE 164 40 Kista, Sweden .
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics.ORCID iD: 0000-0001-8058-2140
2020 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 28, no 7, p. 9208-9215Article in journal (Refereed) Published
Abstract [en]

We present a novel C-cavity concept for tunable lasers. The laser is based on a semiconductor optical amplifier (SOA), serving both as a gain medium as well as a modulator, and a chirped fiber Bragg grating (C-FBG) which acts as the end mirrors on both cavity ends. Driving the SOA with a pulse pair with variable delay enables wavelength tuning by targeting different regions in the C-FBG with the circulating pulse. The cavity design allows for wide tuning while maintaining a constant repetition rate, we show a tuning range of 35 nm -limited by the C-FBG’s reflection bandwidth. Time-multiplexed operation with four different wavelengths is also demonstrated. Furthermore, the laser performance and dynamics under different operating conditions are analyzed and discussed.

Place, publisher, year, edition, pages
Optical Society of America, 2020. Vol. 28, no 7, p. 9208-9215
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-271114DOI: 10.1364/OE.383398ISI: 000523766500017PubMedID: 32225532Scopus ID: 2-s2.0-85082612758OAI: oai:DiVA.org:kth-271114DiVA, id: diva2:1415283
Note

QC 20200318

Available from: 2020-03-18 Created: 2020-03-18 Last updated: 2020-05-12Bibliographically approved

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Lindberg, RobertLaurell, FredrikMargulis, Walter

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