Silicon on-chip bandpass filters for the multiplexing of high sensitivity photonic crystal microcavity biosensors

A method for the dense integration of high sensitivity photonic crystal (PC) waveguide based biosensors is proposed and experimentally demonstrated on a silicon platform. By connecting an additional PC waveguide filter to a PC microcavity sensor in series, a transmission passband is created, contain...

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Veröffentlicht in:Applied physics letters 2015-03, Vol.106 (12), p.121103-121103
Hauptverfasser: Yan, Hai, Zou, Yi, Chakravarty, Swapnajit, Yang, Chun-Ju, Wang, Zheng, Tang, Naimei, Fan, Donglei, Chen, Ray T
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container_end_page 121103
container_issue 12
container_start_page 121103
container_title Applied physics letters
container_volume 106
creator Yan, Hai
Zou, Yi
Chakravarty, Swapnajit
Yang, Chun-Ju
Wang, Zheng
Tang, Naimei
Fan, Donglei
Chen, Ray T
description A method for the dense integration of high sensitivity photonic crystal (PC) waveguide based biosensors is proposed and experimentally demonstrated on a silicon platform. By connecting an additional PC waveguide filter to a PC microcavity sensor in series, a transmission passband is created, containing the resonances of the PC microcavity for sensing purpose. With proper engineering of the passband, multiple high sensitivity PC microcavity sensors can be integrated into microarrays and be interrogated simultaneously between a single input and a single output port. The concept was demonstrated with a 2-channel L55 PC biosensor array containing PC waveguide filters. The experiment showed that the sensors on both channels can be monitored simultaneously from a single output spectrum. Less than 3 dB extra loss for the additional PC waveguide filter is observed.
doi_str_mv 10.1063/1.4916340
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source AIP Journals Complete; Alma/SFX Local Collection
subjects CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CRYSTALS
LIGHT TRANSMISSION
LOSSES
OPTICAL FILTERS
Photonics and Optoelectronics
PHOTONS
RESONANCE
SENSITIVITY
SENSORS
SILICON
WAVEGUIDES
title Silicon on-chip bandpass filters for the multiplexing of high sensitivity photonic crystal microcavity biosensors
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