Title :
High single-mode-yield multiple-wavelength DFB-laser arrays in the 1.55 μm range
Author :
Kreissl, J. ; Troppenz, U. ; Rehbein, W. ; Huttl, B. ; Lenz, E. ; Venghaus, H. ; Fidorra, F.
Author_Institution :
Heinrich-Hertz-Inst. fur Nachrichtentech. Berlin GmbH, Germany
Abstract :
Based on a DFB grating design we have developed a four wavelength laser array with excellent single mode operation and high power output. We could routinely stabilize a high level of single laser yield of about 90% and hence, array yields better than 60%. This was accomplished by a precise control of phase-shifted index gratings with κL = 1.5. To use the advantage of higher grating feedback with κL > 1.5 the single mode yield was improved by a tailored phase shift design.
Keywords :
III-V semiconductors; diffraction gratings; distributed feedback lasers; gallium arsenide; indium compounds; laser modes; laser stability; quantum well lasers; semiconductor laser arrays; waveguide lasers; 1.55 μm range; 1.55 micron; DFB grating design; In1-xGaxAs1-yPy; In1-xGaxAs1-yPy strained layer multi-quantum well; four wavelength laser array; high power output; high single-mode-yield multiple-wavelength DFB-laser arrays; phase-shifted index grating control; ridge waveguide lasers; single laser yield stability; single mode operation; tailored phase shift design; Current measurement; Etching; Gratings; Laser modes; Optical arrays; Optical coupling; Optical design; Power lasers; RNA; Threshold current;
Conference_Titel :
Optical Communication, 2001. ECOC '01. 27th European Conference on
Print_ISBN :
0-7803-6705-7
DOI :
10.1109/ECOC.2001.988845
