Open AccessFabrication of photonic devices directly written within glass using a femtosecond laser
Author(s) -
Ik-Bu Sohn,
Man-Seop Lee,
Jeong-Sik Woo,
Sang-Man Lee,
Jeong-Yong Chung
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.004224
Subject(s) - femtosecond , materials science , optics , splitter , laser , optical fiber , fiber laser , optoelectronics , beam splitter , photonic crystal fiber , fabrication , photonics , insertion loss , wavelength , physics , medicine , alternative medicine , pathology
We present a novel method for three-dimensional optical splitter that have U-grooves, which are used for fiber alignment, within a fused silica glass using near-IR femtosecond laser pulses. The fiber aligned optical splitter has a low insertion loss, less than 4 dB, including an intrinsic splitting loss of 3 dB and excess loss due to the passive alignment of a single-mode fiber. The output field pattern is presented, demonstrating the splitting ratio of the optical splitter is approximately 1:1. Finally, we demonstrate the utility of the femtosecond laser writing of periodic patterns by fabricating the submicron line and dot patterns inside the silica glass, which is applicable to 3-D optical memory.