Title :
10 Gb/s operation of novel single-mode, two-contact InGaAsP lasers with low drive current
Author :
Massara, A.B. ; Sargent, L.J. ; Heard, P.J. ; Penty, R.V. ; White, I.H.
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
Abstract :
Summary form only given. We have demonstrated a two-contact operating regime in a high speed, single-mode device and applied it to NRZ modulation schemes. A 3 dB bandwidth of 15 GHz is found for the two-contact device as compared with a maximum of 10 GHz for the single contact device. For a peak current swing of only 30 mA, an extinction ratio of 6 dB is found at 10 Gb/s, indicating a 25% reduction in current swing required, allowing the transceiver drive electronics specifications imposed to be met. We have also shown that introducing a 2D-lattice grating into one of the sections can be used to create high-speed, single-mode lasers, without perturbation of the device dynamics. The SMSR could be improved by AR coating the short section facet. This simple and repeatable post-processing technique could readily be implemented using RIE during fabrication, hence providing promising low-cost devices for data communications applications.
Keywords :
III-V semiconductors; gallium arsenide; indium compounds; laser modes; optical fabrication; optical transmitters; quantum well lasers; 10 Gbit/s; 15 GHz; 2D-lattice grating; AR coating; InGaAsP; NRZ modulation schemes; RIE; SMSR; data communications applications; device dynamics; extinction ratio; fabrication; high speed single-mode device; low drive current; low-cost devices; peak current swing; repeatable post-processing technique; short section facet; single-mode two-contact InGaAsP lasers; transceiver drive electronics specifications; Attenuation; Bandwidth; Fiber gratings; Laser modes; Optical fiber couplers; Optical reflection; Power generation; Propagation constant; Resonance; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-662-1
DOI :
10.1109/CLEO.2001.947694