NIR photopolymerization self-writing process for fiber-to-fiber single mode coupling

Nessim Jebali; Céline Molinaro; Julien Roul; Julie Jermann; Jean-Baptiste Doucet; Benjamin Reig; Vincent Raimbault; Olivier Soppera; Véronique Bardinal

doi:10.1117/12.3017607

20 June 2024 NIR photopolymerization self-writing process for fiber-to-fiber single mode coupling

Nessim Jebali, Céline Molinaro, Julien Roul, Julie Jermann, Jean-Baptiste Doucet, Benjamin Reig, Vincent Raimbault, Olivier Soppera, Véronique Bardinal

Author Affiliations +

Proceedings Volume 13002, Semiconductor Lasers and Laser Dynamics XI; 130020I (2024) https://doi.org/10.1117/12.3017607
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Low-loss coupling of VCSELs (vertical-cavity surface-emitting lasers) to optical fibres is a key issue for increasing their use in optical communications and instrumentation systems. However, tolerances on angular tilts and lateral misalignments are tight, particularly in the case of single mode devices. To address this challenge, a new fabrication method based on near-infrared single-mode self-writing (NIR-SM-SWW) of a polymer waveguide was developed and tested for the coupling of two single mode fibers at 850 nm (Thorlabs 780-HP) with a mode field diameter close to that of 850 nm single mode VCSEL. The specificity of our method is to use a writing wavelength identical to that designed for single mode propagation in the fibers, leading to a single step photopolymerization process that will be directly transferable to 850 nm VCSEL-to-fiber coupling. First results show coupling losses at 850 nm as low as 0.86 dB for a distance between the fibers of 100 μm.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Nessim Jebali, Céline Molinaro, Julien Roul, Julie Jermann, Jean-Baptiste Doucet, Benjamin Reig, Vincent Raimbault, Olivier Soppera, and Véronique Bardinal "NIR photopolymerization self-writing process for fiber-to-fiber single mode coupling", Proc. SPIE 13002, Semiconductor Lasers and Laser Dynamics XI, 130020I (20 June 2024); https://doi.org/10.1117/12.3017607

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