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Proceedings Paper

Tunable mode-locked laser source based on a semiconductor TWLA at 1.3 um
Author(s): Reinhard K. Erdmann; Steven T. Johns; Jason P. Sokoloff
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Paper Abstract

A semi-conductor TWLA provides the gain medium for an external cavity laser source at 1.32 microns for compatibility with single mode fiber optic systems. The active layer of the waveguide is InGaAsP in an angle stripe geometry. Parameters for CW lasing are established. Pulsed operation is then achieved by two methods: direct RF modulation of the bias current, and regenerative feedback of the converted optical output signal. Both methods yield short pulses of different frequency noise characteristics. The mode-locked rate can be adjusted over a wide range for different applications by varying the cavity length. Wavelength tuning is achieved by replacing the cavity end mirror with a grating the use of an all fiber cavity is examined.

Paper Details

Date Published: 26 February 1993
PDF: 11 pages
Proc. SPIE 1790, Analog Photonics, (26 February 1993); doi: 10.1117/12.141718
Show Author Affiliations
Reinhard K. Erdmann, Air Force Photonics Ctr. at Rome Lab. (United States)
Steven T. Johns, Air Force Photonics Ctr. at Rome Lab. (United States)
Jason P. Sokoloff, Princeton Univ. (United States)

Published in SPIE Proceedings Vol. 1790:
Analog Photonics
Andrew R. Pirich; Paul Sierak, Editor(s)

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