Tunable multisection Fabry-Perot laser

Lalitha Ponnampalam; Richard G. S. Plumb; S. Naseem

doi:10.1117/12.429795

6 June 2001 Tunable multisection Fabry-Perot laser

Lalitha Ponnampalam, Richard G. S. Plumb, S. Naseem

Proceedings Volume 4287, In-Plane Semiconductor Lasers V; (2001) https://doi.org/10.1117/12.429795
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

Abstract

A simple tunable laser structure with quasi-continuous tuning range of 15 nm, more than 30 dB side mode suppression ratio, 400 kHz linewidth and low variation in output power over the tuning range is demonstrated. The device involved minor modifications to a standard Fabry Perot (FP) laser and measurements have confirmed modeled predictions. Prototype fabrication has used focussed ion beam etching to generate three reflection/scattering sites with power reflectivity of approximately 1%, at precise locations along the optical axis of a 1500 nm FP laser. The device contact was electrically split at these reflection/scattering sites, thereby generating weak FP cavities within a strong primary FP cavity. Tuning is achieved by precisely changing the currents to each section and hence altering the refractive indices.

Citation Download Citation

Lalitha Ponnampalam, Richard G. S. Plumb, and S. Naseem "Tunable multisection Fabry-Perot laser", Proc. SPIE 4287, In-Plane Semiconductor Lasers V, (6 June 2001); https://doi.org/10.1117/12.429795

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