Title :
Low-cost 1.55-μm InGaAsP-InP spot size converted (SSC) laser with conventional active layers
Author :
Fang, R.Y. ; Bertone, D. ; Meliga, M. ; Montrosset, I. ; Oliveti, G. ; Paoletti, R.
Author_Institution :
CSELT, Torino, Italy
Abstract :
We report the realization of a low cost 1.55-μm spot size converted (SSC) laser using conventional SCH-MQW active layers. The laser consists of a rectangular gain section, a linear taper and a passive waveguide. The lateral taper and the passive waveguide are fabricated on the same lower SCH layer, using conventional photolithography and RIE (reactive ion etching). The device exhibits low beam divergence of 6.6/spl deg/×10.9/spl deg/ and -2.2-dB coupling loss with a cleaved single-mode fiber. The 1-dB alignment tolerance is /spl plusmn/2.15 μm in vertical direction and /spl plusmn/2.3 μm in lateral direction, respectively.
Keywords :
III-V semiconductors; gallium arsenide; gallium compounds; indium compounds; integrated optics; laser beams; optical fabrication; optical fibre couplers; optical fibre losses; photolithography; quantum well lasers; sputter etching; waveguide lasers; 1.55 mum; InGaAsP-InP; SCH-MQW active layers; alignment tolerance; cleaved single-mode fiber; conventional active layers; coupling loss; fabrication; lateral direction; lateral taper; linear taper; low beam divergence; low-cost laser; passive waveguide; photolithography; reactive ion etching; rectangular gain section; spot size converted laser; vertical direction; Fiber lasers; Laser beams; Lithography; Optical coupling; Optical fiber couplers; Optical fiber losses; Optical fibers; Optical waveguides; Semiconductor lasers; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
