Fast Tuneable InGaAsP DBR Laser Using Quantum-Confined Stark-Effect-Induced Refractive Index Change
Pantouvaki, M, Renaud, C C, Cannard, P, Robertson, M J, Gwilliam, R and Seeds, A J (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).
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.
|Divisions :||Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Ion Beam Centre|
|Date :||1 January 2007|
|Identification Number :||10.1109/JSTQE.2007.906046|
|Additional Information :||Published in <i>Journal of Selected Topics in Quantum Electronics.</i> Vol. 13, Iss. 5, Pt. 1. Copyright 2007 IEEE. Click <a href=http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=2944>here</a> to access the journal's website.|
|Depositing User :||Mr Adam Field|
|Date Deposited :||27 May 2010 14:05|
|Last Modified :||23 Sep 2013 18:25|
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