Publication

GaAs/GaAlAs heterostructure rib waveguide stepped [Triangle Open]β coupler

1994
Journal Articles

Abstract

GaAS/GaAlAs heterostructure rib waveguide coupler with stepped [Triangle Open]β Schottky electrodes has been investigated by using ion-etching and lift-off mask techniques, and optimization design of device structure and lowering epitaxy layer carrier concentration. Total losses of 10dB and extinction ratio of 26.8dB were obtained for single-mode operation at 1.3μm. Operation principle of this device and its design considerations were described in detail. Structural parameters of the coupler were given. The testing method and results for the coupler were presented. The structure of this coupler is compatible with the manufacturing engineering of the devices such as semiconductor lasers, easier to be adopted in repetitive manufacturing.

Official source

https://infoscience.epfl.ch/entities/publication/1068aa59-4862-482a-8caf-32be7457a191

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1994
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/1068aa59-4862-482a-8caf-32be7457a191

About this result

Related concepts (32)

Manufacturing engineering

Manufacturing engineering or production engineering is a branch of professional engineering that shares many common concepts and ideas with other fields of engineering such as mechanical, chemical, electrical, and industrial engineering. Manufacturing engineering requires the ability to plan the practices of manufacturing; to research and to develop tools, processes, machines and equipment; and to integrate the facilities and systems for producing quality products with the optimum expenditure of capital.

Laser diode

A laser diode (LD, also injection laser diode or ILD, or diode laser) is a semiconductor device similar to a light-emitting diode in which a diode pumped directly with electrical current can create lasing conditions at the diode's junction. Driven by voltage, the doped p–n-transition allows for recombination of an electron with a hole. Due to the drop of the electron from a higher energy level to a lower one, radiation, in the form of an emitted photon is generated. This is spontaneous emission.

Multidisciplinary design optimization

Multi-disciplinary design optimization (MDO) is a field of engineering that uses optimization methods to solve design problems incorporating a number of disciplines. It is also known as multidisciplinary system design optimization (MSDO), and Multidisciplinary Design Analysis and Optimization (MDAO). MDO allows designers to incorporate all relevant disciplines simultaneously. The optimum of the simultaneous problem is superior to the design found by optimizing each discipline sequentially, since it can exploit the interactions between the disciplines.

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GaAs/GaAlAs heterostructure rib waveguide stepped [Triangle Open]β coupler

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GaAs/GaAlAs heterostructure rib waveguide stepped [Triangle Open]&beta; coupler

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GaAs/GaAlAs heterostructure rib waveguide stepped [Triangle Open]β coupler