Title :
Multiwavelength DFB laser array with integrated spot size converters
Author :
Ketelsen, L.J.P. ; Grenko, J.A. ; Sputz, S.K. ; Focht, M.W. ; Vandenberg, J.M. ; Johnson, J.E. ; Reynolds, C.L. ; Geary, J.M. ; Levkoff, J. ; Glogovsky, K.G. ; Stampone, D.V. ; Chu, S.N.G. ; Siegrist, T. ; Pernell, T.L. ; Walters, F.S. ; Sheridan-Eng, J.
Author_Institution :
Lucent Technol., AT&T Bell Labs., Murray Hill, NJ, USA
fDate :
6/1/2000 12:00:00 AM
Abstract :
We describe the design, fabrication, and performance of a five-element quarterwave-shifted distributed feedback laser array with monolithically integrated spot size converters intended for use as a multiple-wavelength source in dense wavelength-division telecommunications systems. Facet power in excess of 10 mW with less than 150 mA bias and longitudinal side mode suppression greater than 40 dB were routinely achieved. Narrow far-field full-width at half-maximum angles of 6.9/spl deg//spl times/16.3/spl deg/ provided 3.5-dB coupling loss into single-mode fiber with 1.0-dB misalignment tolerances of /spl plusmn/2.0 /spl mu/m. With /spl plusmn/10/spl deg/C thermal tuning, 22 1555-nm channels spaced by 50 GHz were accessed with this device. Thorough field evaluation indicates that such a device is consistent with manufacturing requirements.
Keywords :
distributed feedback lasers; integrated optics; integrated optoelectronics; laser modes; optical design techniques; optical fabrication; optical transmitters; optical tuning; semiconductor laser arrays; wavelength division multiplexing; 10 mW; 1555 nm; dense wavelength-division telecommunications systems; facet power; five-element quarterwave-shifted distributed feedback laser array; integrated spot size converters; longitudinal side mode suppression; manufacturing requirements; misalignment tolerances; monolithically integrated spot size converters; multiple-wavelength source; multiwavelength DFB laser array; narrow far-field full-width at half-maximum angles; optical design; optical fabrication; single-mode fiber; thermal tuning; Distributed feedback devices; Laser feedback; Laser modes; Laser tuning; Manufacturing; Optical arrays; Optical design; Optical device fabrication; Optical fiber devices; Wavelength converters;
Journal_Title :
Quantum Electronics, IEEE Journal of
