Title :
A monolithic three-channel LD-PD array with vertically staggered facets for autofocusing reflectivity sensors
Author :
Katagiri, Yoshitada ; Suzuki, Yoshio ; Tanaka, Hidenao ; Nakada, Hiroshi
Author_Institution :
NTT Corp., Tokyo, Japan
fDate :
5/1/1992 12:00:00 AM
Abstract :
A monolithic three-channel LD-PD array with vertically staggered facets is proposed for an autofocusing reflectivity sensor which uses light feedback. The focus-sensing characteristics are investigated using an array with a radiation facet displacement of 12 mu m and an interchannel distance of 130 mu m, fabricated on an 830-nm AlGaAs/GaAs multiple-quantum-well laser substrate with buried-heterostructure stripe geometry waveguides. High focus-sensing accuracy is achieved. A potential application of the array to optical heads for phase change media is discussed.<>
Keywords :
III-V semiconductors; aluminium compounds; feedback; gallium arsenide; integrated optoelectronics; optical waveguides; photodiodes; reflectivity; semiconductor junction lasers; 830 nm; AlGaAs-GaAs; IR; autofocusing reflectivity sensors; buried-heterostructure stripe geometry waveguides; interchannel distance; laser diodes; light feedback; monolithic three-channel LD-PD array; multiple-quantum-well laser substrate; optical heads; phase change media; photodiodes; radiation facet displacement; semiconductors; vertically staggered facets; Gallium arsenide; Laser feedback; Optical arrays; Optical waveguides; Phased arrays; Quantum well devices; Reflectivity; Sensor arrays; Sensor phenomena and characterization; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
