title: Selecting detection wavelength of resonant cavity-enhanced photodetectors by guided-mode resonance reflectors.
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.
authors.affiliation: Department of Electronics Engineering, National Chiao Tung University, 1001 University Road, Hsinchu 300, Taiwan.
authors.forename: Kuo-Wei
authors.initials: KW
authors.lastname: Lai
authors.forename: Yi-Shan
authors.initials: YS
authors.lastname: Lee
authors.forename: Ying-Jhe
authors.initials: YJ
authors.lastname: Fu
authors.forename: Sheng-Di
authors.initials: SD
authors.lastname: Lin