Coherent light generators – Particular active media – Semiconductor
Patent
1996-10-15
1998-07-21
Bovernick, Rodney B.
Coherent light generators
Particular active media
Semiconductor
372 45, H01S 319
Patent
active
057843988
ABSTRACT:
An optoelectric component has two waveguide layers and a layer with a periodic structure, which layers are arranged parallel to one another and are dimensioned so that a codirectional coupling is produced between modes guided in each of the waveguide layers. In order to prevent undesirable reflections, changes in the effective refractive index in the periodic structure is gradually changed along the direction of propagation. This change can be by the boundary of the periodic structure extending at an angle other than a right angle to the direction of propagation, either in a vertical or a lateral direction. The change can also be accomplished by a gradual change of the composition at the boundary of the periodic structure and adjacent portions or sections.
REFERENCES:
patent: 4932032 (1990-06-01), Koch et al.
patent: 4944838 (1990-07-01), Koch et al.
patent: 5093835 (1992-03-01), Takemoto et al.
patent: 5143864 (1992-09-01), Takemoto et al.
patent: 5208824 (1993-05-01), Tsang
patent: 5325379 (1994-06-01), Amann
patent: 5452318 (1995-09-01), Makino et al.
patent: 5539766 (1996-07-01), Ishino et al.
Amann et al, "Widely Tunable Laser Diodes with Tapered Index Perturbations for Reduced Internal Reflecitons and Improved Wavelength Access", Electronics Letters, vol. 32, No. 3, pp. 221-222, Feb. 1996.
Amann et al, "Distributed Forward Coupled (DFC) Laser" IEEE Journal of Selected Topics in Quantum Electronics, vol. 1, No. 2, Jun. 1, 1995, pp. 387-395.
Amann et al, "Widely tunable laser diodes with tapered index perturbations for reduced internal reflections and improved wavelength access", Electronics Letters, vol. 32, No. 3, Feb. 1, 1996 pp. 221-222.
I. Kim et al, "Broadly tunable vertical-coupler filtered tensile-strained InGaAs/InGaAsP multiple quantum well laser", Applied Physics Letter, vol. 64, No. 21, 23 May 1994, pp. 2764-2766.
Amann et al, "Widely tunable Distributed Forward Coupled (DFC) Laser", Electronics Letters, vol. 29, No. 9, 29 Apr. 1993, pp. 793-794.
Rast et al, "Gain-Coupled Strained Layer MQW-DFB Lasers with an Essentially Simplified Fabrication Process for .lambda.=1.55 .mu.m", IEEE Photonics Technology Letters, vol. 7, No. 8, Aug. 1995, pp. 830-832.
Amann Markus-Christian
Illek Stefan
Bovernick Rodney B.
Leung Quyen Phan
Siemens Aktiengesellschaft
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