Abstract

The light-induced self-written (LISW) waveguide technique is a promising candidate for the practical realization of a passive alignment between telecommunication and silicon photonic devices. While silicon is transparent to wavelengths above 1100 nm, the one-photon polymerization wavelength range is limited below 1100 nm. In this study, LISW waveguide fabrication at telecommunication wavelengths was demonstrated using a single-photon photopolymerizing resin. The LISW waveguide fabrication threshold values are lower than that of the two-photon photopolymerization system by six to seven orders of magnitude. LISW waveguides are fabricated from a single-mode fiber, a vertical-cavity surface-emitting laser, and a silicon waveguide. Using this technique, fiber-to-chip self-coupling between silicon photonic devices at telecommunication wavelengths is demonstrated. The results demonstrate the potential of the LISW technique for optical self-coupling of telecommunication and silicon photonic devices.

Light-induced self-written waveguide fabrication using 1550 nm laser light

Hidetaka Terasawa, Freddy Tan, Okihiro Sugihara, Akari Kawasaki, Daisuke Inoue, Tatsuya Yamashita, Manabu Kagami, Olivier Maury, Yann Bretonnière, and Chantal Andraud
Opt. Lett. 42(11) 2236-2238 (2017)

Cost-effective fiber-to-lithium niobate chip coupling using a double-side irradiation self-written waveguide

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Tapered self-written waveguide for a silicon photonic chip I/O

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Opt. Lett. 47(12) 2971-2974 (2022)

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Saber Kamoun, Abdelmonem Jemal, Mohamed Gargouri, Alberto Barsella, Loïc Mager, Hicham Ibn El Arach, Kokou Dodzi Dorkenoo, and Alain Fort
Appl. Opt. 49(11) 2095-2098 (2010)

Serially grafted polymer optical waveguides fabricated by light-induced self-written waveguide technique

Okihiro Sugihara, Shuhei Yasuda, Bin Cai, Kyoji Komatsu, and Toshikuni Kaino
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