Narrowband reflection from integrated Bragg gratings with corrugations on long side structures

Author

Keng-Hsien Lin ; Chong-Jia Wu ; Yung-Jr Hung ; Cheng-Yu Wang ; Yung-Jui Chen

Author_Institution

Dept. of Photonics, Nat. Sun Yat-sen Univ., Kaohsiung, Taiwan

fYear

2015

fDate

4-6 May 2015

Firstpage

1

Lastpage

4

Abstract

An alternative approach to realize CMOS-compatible integrated Bragg gratings is proposed and implemented in this work to allow flexible control of the reflection response. To enable weak grating coupling strength in fully-etched waveguide, we employ corrugations on long side waveguides in the proposed cladding-modulated waveguides, leading to a measured reflection bandwidth of only 0.44 nm and a peak reflectivity of 96%. This grating design is relatively insensitive to the grating width variation, so within 1nm Bragg wavelength variation is also observed.

Keywords

Bragg gratings; integrated optics; optical design techniques; optical waveguides; reflectivity; CMOS-compatible integrated Bragg gratings; cladding-modulated waveguides; grating width variation; long side structures; peak reflectivity; reflection bandwidth; Bandwidth; Bragg gratings; Couplings; Gratings; Optical reflection; Optical waveguides; cladding-modulated waveguide; integrated Bragg grating; silicon photonic integrated circuit;

fLanguage

English

Publisher

ieee

Conference_Titel

Next-Generation Electronics (ISNE), 2015 International Symposium on

Conference_Location

Taipei

Type

conf

DOI

10.1109/ISNE.2015.7132003

Filename

7132003