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C-cavity fiber laser employing a chirped fiber Bragg grating for electrically gated wavelength tuning
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
Proximion AB, Sweden.
RISE Research Institutes of Sweden, Digital Systems, Smart Hardware. KTH Royal Institute of Technology, Sweden.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
OSA - The Optical Society , 2020. Vol. 28, no 7, p. 9208-9215
Keywords [en]
Fiber amplifiers, Fiber lasers, Laser mirrors, Semiconductor optical amplifiers, Tuning, Cavity fibers, Chirped fiber Bragg grating, Different operating conditions, Laser performance, Repetition rate, Time multiplexed, Variable delays, Wavelength tuning, Fiber Bragg gratings
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-44714DOI: 10.1364/OE.383398Scopus ID: 2-s2.0-85082612758OAI: oai:DiVA.org:ri-44714DiVA, id: diva2:1426614
Available from: 2020-04-27 Created: 2020-04-27 Last updated: 2020-04-27Bibliographically approved

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Margulis, Walter

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