抄録
We describe a systematic investigation on void structures fabricated by femtosecond laser irradiation inside dielectric materials for fabrication of a compact optical circuit. Void shapes fabricated in 5 different dielectric materials were compared and the physical constants determining the void shape were discussed. A long void array is obtainable in a material which has a low critical power for self-focusing. It was also indicated that the coefficient of thermal expansion is a dominant governing factor to fabricate a precise void which has a clear boundary. Furthermore, we propose and design a Mach-Zehnder interferometer in fused silica composed of optical waveguides and photonic crystals to verify practical application of a void array. Simulation results of the optical propagation in a Mach-Zehnder interferometer indicated that the photonic crystals using a void array have potential to fabricate compact optical circuits.
本文言語 | English |
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ページ(範囲) | 1041-1047 |
ページ数 | 7 |
ジャーナル | Applied Physics A: Materials Science and Processing |
巻 | 100 |
号 | 4 |
DOI | |
出版ステータス | Published - 2010 9 1 |
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)