Open AccessA reflective microring notch filter and sensor
Author(s) -
Hongcheng Sun,
Antao Chen,
Larry R. Dalton
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.010731
Subject(s) - optics , resonator , reflector (photography) , band stop filter , reflection (computer programming) , filter (signal processing) , fiber bragg grating , distributed bragg reflector , optical filter , wavelength , port (circuit theory) , materials science , optoelectronics , computer science , physics , light source , electronic engineering , low pass filter , engineering , computer vision , programming language
We present a new design of wavelength selective reflector composed of a Y junction and a singly coupled microring resonator, and demonstrate its biochemical sensing applications with a prototype device. In contrast with other reflectors like distributed Bragg reflectors, this device acts as notch filter at its reflection port. One promising application of the device is for remote sensing of harsh or inaccessible site, where only one optical fiber is required to transmit the input and reflected light signal over a long distance. The design can also be used to make microring cavity lasers.