Selecting detection wavelength of resonant cavity-enhanced hotodetectors by guided-mode resonance reflectors

Kuo Wei Lai*, Yi Shan Lee, Ying Jhe Fu, Sheng-Di Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

We propose and demonstrate a novel device structure of resonant cavity-enhanced photodetector (RCE-PD). The new RCE-PD structure consists of a bottom distributed Bragg reflector (DBR), a cavity with InGaAs multiple quantum wells (MQWs) for light absorption and a top mirror of sub-wavelength grating. By changing the fill factor of the 2-D grating, the effective cavity length of RCE-PDs can be varied so the resonant wavelength can be selected post growth. Accordingly, we can fabricate an array of PDs on a single chip, on which every PD aims for a specific wavelength.

Original languageEnglish
Pages (from-to)3572-3579
Number of pages8
JournalOptics Express
Volume20
Issue number4
DOIs
StatePublished - 13 Feb 2012

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