Polymer waveguides self-organized by two-photon photochemistry for self-aligned optical couplings with wide misalignment tolerances

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• 作者：Tetsuzo Yoshimura^a ; ^{tetsu@cs.teu.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; ^{kekyoandyoritan@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Daisuke Takeda^a ; Takuya Sato^a ; Yoshihiko Kinugasa^a ; Hideyuki Nawata^b ; ^{nawatahide@nissanchem.co.jp" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Self-organized lightwave network ; Self-aligned optical couplings ; Polymer waveguides ; Two-photon photochemistry ; Nano-scale waveguides
• 刊名：Optics Communications
• 出版年：2016
• 出版时间：1 March 2016
• 年：2016
• 卷：362
• 期：Complete
• 页码：81-86
• 全文大小：1942 K

文摘

Self-organized optical waveguides formed in a photopolymer using two-photon photochemistry is proposed for self-aligned optical couplings involving nano-scale optical devices with wide tolerances in lateral misalignments. Simulations based on the finite-difference time-domain method revealed that on introducing a 400-nm write beam and a 780-nm write beam into the two-photon photopolymer respectively from two 600-nm-wide waveguides facing each other with 32 μm gap a self-aligned coupling waveguide called a two-photon self-organized lightwave network (SOLNET) is formed between the two waveguides. The lateral misalignment tolerance was found to be 3000 nm, which is five times larger than the misalignment limit of ~600 nm in waveguides formed by conventional one-photon photochemistry. Preliminary experiments demonstrated that the two-photon SOLNETs are formed between multimode optical fibers by introducing a 448-nm write beam and a 780-nm (or 856-nm) write beam from the fibers into a photosensitive organic/inorganic hybrid material, SUNCONNECT®, with doped camphorquinone (or biacetyl).