10Gbit/s modulation of a fast switching slotted Fabry-Pérot tunable laser
Smyth, Frank and O'Dowd, John and Kilper, Daniel C. and Simsarian, J.E. and Barry, Liam P. and Roycroft, Brendan and Corbett, Brian (2007) 10Gbit/s modulation of a fast switching slotted Fabry-Pérot tunable laser. In: CLEOE-IQEC 2007 - European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference, 17-22 June 2007, Munich, Germany.
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The device used is a three-section, 3mum wide ridge waveguide laser based on commercially available material. During the fabrication a series of slots are introduced into the front and back sections, which act as sites of internal reflections. The slots are etched to a depth that just penetrates the top of the upper waveguide resulting in an internal reflectance of-1% at each slot. The front, middle, and back sections are 180, 690 and 170 microns long respectively. In this work the back and middle sections are tied together electrically allowing simpler control of the device. By varying the applied DC currents, eight discrete channels are observed over a range of approximately 19nm.
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