Fabrication and characterization of hollow waveguide distributed bragg reflectors

IEICE Electronics Express

Fumio Koyama¹  Akihiro Matsutani¹  Yasuki Sakurai¹ 

[1] Microsystem Research Center, Tokyo Institute of Technology

关键词: hollow waveguide;    air-core;    Bragg reflector;    tunable filter;    photonic integrated circuit;   

DOI  :  10.1587/elex.1.81

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(5)Cited-By(2)We present the fabrication and characterization of a novel distributed Bragg reflector consisting of a grating loaded slab hollow waveguide. In this structure, we are able to obtain a high reflectivity even by using thin and short surface gratings because of the large contrast in refractive indices between a grating material and an air-core. We fabricated a slab hollow waveguide Bragg reflector with 620µm long, 190nm deep 1st-order circular grating composed of SiO2 exhibiting strong Bragg reflection at 1558nm with an air-core thickness of 10µm for TM mode. The peak reflectivity is 65% including fiber coupling loss, the 3dB bandwidth is 2.8nm and the grating-induced loss is less than 0.5dB.

【 授权许可】

Unknown