Discrete mode lasers for communication applications
- 1 February 2009
- journal article
- Published by Institution of Engineering and Technology (IET) in IET Optoelectronics
- Vol. 3 (1), 1-17
- https://doi.org/10.1049/iet-opt:20080028
Abstract
The authors present a novel, low cost laser transmitter for telecommunication systems. This device, called discrete mode (DM) laser, is basically a ridge waveguide Fabry–Pérot (FP) laser, whose wavelength spectra has been modified to obtain a single mode operation. This is achieved by perturbing the effective refractive index of the guided mode along very small sections of the laser cavity, by etching features into the ridge waveguide. Suitable positioning of these interfaces allows the mirror loss spectrum of an FP laser to be manipulated in order to achieve single longitudinal mode emission. The waveguide structure requires only a single growth stage and uses optical lithography to realise the ridge. In addition, the fabrication process is re-growth free. Despite this simple and low cost fabrication process, the DM lasers portray many advantages over the distributed feedback and distributed Bragg reflector lasers, such as very high side mode suppression ratio, stable operation over a large temperature range, narrow linewidth and low sensitivity to optical feedback.Keywords
This publication has 18 references indexed in Scilit:
- Design of Single-Mode and Two-Color Fabry--PÉrot Lasers With Patterned Refractive IndexIEEE Journal of Selected Topics in Quantum Electronics, 2007
- Theory of improved spectral purity in index patterned Fabry-Pérot lasersApplied Physics Letters, 2005
- Tunable VCSELIEEE Journal of Selected Topics in Quantum Electronics, 2000
- Low-threshold lasing in novel microdisk geometriesIEEE Photonics Technology Letters, 1996
- Single longitudinal mode ridge waveguide 1.3µm Fabry-Perot laser by modal perturbationElectronics Letters, 1995
- Strained multiquantum-well corrugation-pitch-modulated distributed feedback laser with ultranarrow (3.6 kHz) spectral linewidthElectronics Letters, 1993
- Effect of fixed emission wavelength on threshold current of InGaAsP semiconductor laser diodesElectronics Letters, 1992
- Analysis of the spectral linewidth of distributed feedback laser diodesJournal of Lightwave Technology, 1985
- Rate equation model of a coupled-cavity laserIEEE Journal of Quantum Electronics, 1984
- Antisymmetric taper of distributed feedback lasersIEEE Journal of Quantum Electronics, 1976