Title :
A 1.5 mu m DFB laser array with a 1 AA channel spacing set by monolithically integrated heaters
Author :
Lo, Y.H. ; Way, W.I. ; Gozdz, A.S. ; Lin, P.S.D. ; Bhat, R. ; Lin, C. ; Lee, T.P.
Author_Institution :
Bellcore, Red Bank, NJ, USA
Abstract :
A laser array of four DFB (distributed feedback) lasers with a wavelength spacing as small as 1 AA has been demonstrated. The wavelength spacing is coarsely set by the built-in grating periods and is fine-tuned by a heater array integrated with the laser array. A tuning range of 14 AA and a channel spacing of 1 AA have been achieved. It is shown that both thermal crosstalk and RF crosstalk can be very low. It is noted that the integrated thermally tuned DFB laser array will be very useful in optical frequency division multiplexing systems.<>
Keywords :
crosstalk; diffraction gratings; distributed feedback lasers; integrated optics; laser transitions; laser tuning; optical communication equipment; semiconductor laser arrays; 1.5 micron; DFB laser array; RF crosstalk; built-in grating periods; channel spacing; distributed feedback; monolithically integrated heaters; optical frequency division multiplexing systems; semiconductor lasers; thermal crosstalk; thermally tuned laser; tuning range; Channel spacing; Crosstalk; Distributed feedback devices; Gratings; Integrated optics; Laser feedback; Laser tuning; Optical arrays; Optical tuning; Radio frequency;
Conference_Titel :
Electron Devices Meeting, 1990. IEDM '90. Technical Digest., International
Conference_Location :
San Francisco, CA, USA
DOI :
10.1109/IEDM.1990.237209
