Title :
Mode coupling in a narrow spectral bandwidth quantum-dot microcavity photodetector
Author :
Deppe, D.G. ; Kudari, A. ; Huffaker, D.L. ; Deng, H. ; Deng, Q. ; Campbell, J.C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
The resonant-cavity photodetector based on a quantum-dot (QD) absorbing region is analyzed and compared with experiment. We show that mode matching due to the low loss cavity in this type of photodetector is important in establishing the detection efficiency. In addition to extending GaAs-based photodetectors into the 1.3-μm wavelength regime, the QD active region can achieve an ultra-narrow spectral response because of its low absorption.
Keywords :
gallium arsenide; infrared detectors; mode matching; optical couplers; optical resonators; photodetectors; semiconductor quantum dots; 1.3 mum; GaAs; GaAs-based photodetectors; detection efficiency; low absorption; low loss cavity; mode coupling; mode matching; narrow spectral bandwidth quantum-dot microcavity photodetector; quantum-dot absorbing region; resonant-cavity photodetector; ultra-narrow spectral response; Absorption; Bandwidth; Frequency; Microcavities; Optical scattering; Photodetectors; Polarization; Quantum dots; Resonance; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
