Tuning multichannel filters based on FBG in multicore fibers
Goebel TA, Weissflog M, Kraemer RG, Heck M, Richter D, Nolte S (2019)
Publication Type: Conference contribution
Publication year: 2019
Journal
Publisher: SPIE
Book Volume: 10908
Conference Proceedings Title: Proceedings of SPIE - The International Society for Optical Engineering
Event location: San Francisco, CA, USA
ISBN: 9781510624580
DOI: 10.1117/12.2513850
Abstract
Multichannel filter elements based on fiber Bragg gratings in multicore fibers (MCF) feature excellent potential for applications in astrophotonics. However, due to slight core-to-core variations of the refractive index (RI), the resonance wavelength of the inscribed FBGs differs. For an optimized functionality, the filter properties, especially the resonance wavelengths, should be equal across all cores. Therefore, we present a post-treatment procedure by ultrashort pulsed laser irradiation in order to tune the resonance wavelength of an individual FBG. To shift the resonance wavelength, a constant RI change in addition to the RI modulation is induced. Precisely tuned wavelength shifts up to 255 pm are demonstrated. Finally, we demonstrate precise tuning of the FBG resonance wavelength in a single core inside an MCF.
Involved external institutions
Germany (DE)How to cite
APA:
Goebel, T.A., Weissflog, M., Kraemer, R.G., Heck, M., Richter, D., & Nolte, S. (2019). Tuning multichannel filters based on FBG in multicore fibers. In Michel Meunier, Peter R. Herman, Roberto Osellame (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. San Francisco, CA, USA: SPIE.
MLA:
Goebel, T. A., et al. "Tuning multichannel filters based on FBG in multicore fibers." Proceedings of the Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIX 2019, San Francisco, CA, USA Ed. Michel Meunier, Peter R. Herman, Roberto Osellame, SPIE, 2019.
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