Title :
Control of lasing wavelength in distributed feedback lasers by angling the active stripe with respect to the grating
Author :
Tsang, W.T. ; Kapre, R.M. ; Logan, R.A. ; Tanbun-Ek, T.
Author_Institution :
AT&T Bell Labs., Murray Hill, NJ, USA
Abstract :
We proposed and demonstrated a new and very simple technique of varying the lasing wavelength of distributed feedback (DFB) lasers with the need for fabricating gratings with different pitches. This is accomplished by angling the active stripe at an oblique angle with respect to the axis of the grating lines. This technique should be particularly suitable for fine tuning of lasing wavelength, and it eases the stringent demand on precise control of absolute grating pitches. It should be useful and important for dense (wavelength division multiplexing (WDM) applications and monolithic integration of multi-wavelength DFB lasers.<>
Keywords :
diffraction gratings; distributed feedback lasers; integrated optoelectronics; laser theory; laser tuning; multiplexing; semiconductor lasers; wavelength division multiplexing; DFB lasers; WDM; absolute grating pitches; active stripe; distributed feedback lasers; fine tuning; grating; grating lines; laser diodes; laser tuning; lasing wavelength; lasing wavelength control; monolithic integration; multi-wavelength DFB lasers; oblique angle; pitches; wavelength division multiplexing; Distributed Bragg reflectors; Distributed feedback devices; Fiber lasers; Gratings; Laser feedback; Laser modes; Laser tuning; Optical control; Optical fiber amplifiers; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
