Tapered Spot Size Converter by Mask-Transfer Self-Written Technology for Optical Interconnection

Baharudin, Nurul Atiqah; Fujikawa, Chiemi; Mitomi, O.; Suzuki, Akinori; Taguchi, Shonosuke; Mikami, Osamu; Ambran, Sumiaty

doi:10.1109/lpt.2017.2694964

Cited by 11 publications

(2 citation statements)

References 6 publications

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“…This approach has great advantages for position alignment as the pillars were fabricated to fit precisely [23][24][25] without additional altering. Previous studies [26][27][28][29][30] also elaborated on fabrication using a masktransfer SWW. The extended mask-transfer SWW improves the contact exposure of the UV-curable resin by a current photomask, and is developed from "classic" fiber-SWW A photomask with designated apertures was put on the UV-curable resin on the substrate, as shown in Fig.…”

Section: Proposed Fabrication Methods Of Microlenses On Optical Pillarsmentioning

confidence: 99%

UV-curable resin microlenses on optical pillars for optical interconnect

Baharudin

Fujikawa

Mikami

et al. 2019

Jpn. J. Appl. Phys.

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A unique combination of pillar and microlens is demonstrated to enable easy coupling between VCSEL layers and a multi-layer/channel optical printed wiring board. A number of uniform pillars having a microlens on the top were fabricated on a substrate using UV-curable resin by masktransfer self-written waveguide and dipping methods. Ray-trace analysis indicated that the focusing characteristics could be controlled by adjusting the pillar height and the microlens radius of curvature. Tolerance coupling efficiency between pillar height and microlens radius of curvature is acceptable. Light propagation measurements showed that uniform power was obtained from all top microlenses of the 3 × 4 pillar array on a slide glass. Studies of the reproducibility of microlens-on-pillar fabrication using the dipping method show a positive outcome. As a result, optical coupling efficiency is expected to be improved in optical interconnect applications.

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Section: Proposed Fabrication Methods Of Microlenses On Optical Pillarsmentioning

confidence: 99%

UV-curable resin microlenses on optical pillars for optical interconnect

Baharudin

Fujikawa

Mikami

et al. 2019

Jpn. J. Appl. Phys.

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“…To achieve high coupling between them, several approaches have been proposed, such as a polymer waveguide with curvature on the SMF core end face [2], polymer microtips at different types of optical fibers [3], a coupling device consisting of a pillar and microlens on the SMF end face [4][5], a self-written waveguide (SWW) using a resin that can be cured in the near-infrared region [6][7], a taper fabricated by 3D printing technology [8], a self-formed tapered waveguide by bilateral injection from a SiPh chip, and an SMF with a special waveguide fabricated [9][10]. Previously, our university team proposed a method for fabricating multiple tapered pillars using the photomask transfer method for UV-curable resin [11]. By using a small mask aperture with a diameter of 3 µm, UV light passing through the aperture of the mask was radiated owing to the diffraction effect, and a taper with predetermined form was produced on the glass substrate as a test.…”

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confidence: 99%

Polymer tapered pillar on a fiber end fabricated by UV irradiation using a high-NA fiber

et al. 2022

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The increasing need for single-mode fibers (SMFs) and advances in silicon photonics (SiPh) devices have led to the need for an efficient method of optical coupling between them. To achieve a higher coupling between them, a polymer tapered pillar was fabricated on the end face of the SMF by applying the optical diffraction effect and a self-written waveguide technology using a high numerical aperture (HiNA) fiber. The initial 10.4 µm spot size was reduced to 4.17 µm at 1.55 µm wavelength, and the greatest coupling efficiency of –1.01 dB was reached between an SMF with a tapered pillar and uncured resin cladding and a HiNA fiber. Full Text: PDF ReferencesR. Marchetti, C. Lacava, L. Carroll, K. Gradkowski, P. Minzioni, "Coupling strategies for silicon photonics integrated chips [Invited]", Photonics Res. 7, 201 (2019). CrossRef R. Bachelot, C. Ecoffet, D. Deloeil, P. Royer, D.-J. Lougnot, "Integration of micrometer-sized polymer elements at the end of optical fibers by free-radical photopolymerization", Appl. Opt. 40, 5860 (2001). CrossRef P. Pura, M. Szymanski, M. Dudek, L.R. Jaroszewicz, P. Marc, M. Kujawinska, "Polymer Microtips at Different Types of Optical Fibers as Functional Elements for Sensing Applications", J. Lightwave Techn. 33, 2398 (2015). CrossRef O. Mikami, R. Sato, S. Suzuki, C. Fujikawa, "Polymer Microlens on Pillar Grown From Single-Mode Fiber Core for Silicon Photonics", IEEE Photonics. Technol. Lett. 32, 399 (2020). CrossRef Y. Kamiura, T. Kurisawa, C. Fujikawa, O. Mikami, "High optical coupling efficiency of polymer microlens and pillar on single mode fiber for silicon photonics", Jpn. J. Appl. Phys. 61, SK1009 (2022). CrossRef F. Tan, H. Terasawa, O. Sugihara, A. Kawasaki, T. Yamashita, D. Inoue, M. Kagami, C. Andraud, "Two-Photon Absorption Light-Induced Self-Written Waveguide for Single-Mode Optical Interconnection", J. Lightwave Tech. 36, 2478 (2018). CrossRef H. Terasawa, O. Sugihara, "Near-Infrared Self-Written Optical Waveguides for Fiber-to-Chip Self-Coupling", J. Lightwave Technol. 39, 7472 (2021). CrossRef K. Vanmol, K. Saurav, V. Panapakkam, H. Thienpont, N. Vermeulen, J. Watté, J. Van Erps, "Mode-field Matching Down-Tapers on Single-Mode Optical Fibers for Edge Coupling Towards Generic Photonic Integrated Circuit Platforms", J. Lightwave Tech. 38, 4834 (2020). CrossRef Y. Saito, K. Shikama, T. Tsuchizawa, H. Nishi, A. Aratake, N. Sato, "Tapered Self-Written Waveguide between Silicon Photonics Chip and Standard Single-Mode Fiber", Opt. Fiber Communication Conference (OFC2020), paper W1A.2, (2020). CrossRef Y. Saito, K. Shikama, T. Tsuchizawa, N. Sato, "Tapered self-written waveguide for a silicon photonic chip I/O", Opt. Lett. 47(12), 2971 (2022). CrossRef N.A. Baharudin, C. Fujikawa, O. Mitomi, A. Suzuki, S. Taguchi, O. Mikami, S. Ambran, "Tapered Spot Size Converter by Mask-Transfer Self-Written Technology for Optical Interconnection", Photon. Technol. Lett. 29, 949 (2017). CrossRef H. Nawata, K. Ohmori, Proc. International Conference on Electronics Packaging (ICEP), paper 23 (2014) DirectLink S. J. Frisken, "Light-induced optical waveguide uptapers", Opt. Lett. 18, 1035 (1993). CrossRef Y. Obata, Y. Oyama, H. Ozawa, T. Ito, O. Mikami, T. Uchida, "Multi-array Self-written Waveguides using Photo-mask for Optical Surface Mount Technology", International Conference on Electronics Packaging (ICEP), paper 225 (2005). DirectLink P. Yin, J.R. Serafini, Z. Su, R. Shiue, E. Timurdogan, M.L. Fanto, S. Preble, "Low connector-to-connector loss through silicon photonic chips using ultra-low loss splicing of SMF-28 to high numerical aperture fibers", Opt. Expr. 27, 24188 (2019). CrossRef https://coherentinc.force.com/Coherent/UHNA3?cclcl=en_US, (18/09/2022). DirectLink

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