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Fast tuneable InGaAsP DBR laser using quantum-confined stark-effect-induced refractive index change

Pantouvaki, M; Renaud, CC; Cannard, P; Robertson, MJ; Gwilliam, R; Seeds, AJ; (2007) Fast tuneable InGaAsP DBR laser using quantum-confined stark-effect-induced refractive index change. IEEE Journal of Selected Topics in Quantum Electronics , 13 (5) 1112 - 1121. 10.1109/JSTQE.2007.906046. Green open access

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Abstract

We report a monolithically integrated InGaAsP DBR ridge waveguide laser that uses the quantum-confined Stark effect (QCSE) to achieve fast tuning response. The laser incorporates three sections: a forward-biased gain section, a reverse-biased phase section, and a reverse-biased DBR tuning section. The laser behavior is modeled using transmission matrix equations and tuning over similar to 8 nm is predicted. Devices were fabricated using post-growth shallow ion implantation to reduce the loss in the phase and DBR sections by quantum well intermixing. The lasing wavelength was measured while varying the reverse bias of the phase and DBR sections in the range 0 V to < - 2.5 V. Timing was noncontinuous over a similar to 7-nm-wavelength range, with a side-mode suppression ratio of similar to 20 dB. Coupled cavity effects due to the fabrication method used introduced discontinuities in tuning. The frequency modulation (FM) response was measured to be uniform within 2 dB over the frequency range 10 MHz to 10 GHz, indicating that tuning times of 100 ps are possible.

Type: Article
Title: Fast tuneable InGaAsP DBR laser using quantum-confined stark-effect-induced refractive index change
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/JSTQE.2007.906046
Publisher version: http://dx.doi.org/10.1109/JSTQE.2007.906046
Language: English
Additional information: © 2007 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Keywords: integrated optics, ion implantation, laser tuning, quantum-confined Stark effect (QCSE), quantum well intermixing (QWI), timeable semiconductor lasers, FREQUENCY-MODULATION RESPONSE, WELL STRUCTURES, TUNING RANGE, ION-IMPLANTATION, PERFORMANCE, ELECTROABSORPTION, TRANSMITTER, GENERATION, REFLECTOR, DIFFUSION
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/19404
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