Publication

Density clamping and longitudinal spatial hole burning in a gain-clamped semiconductor optical amplifier

Benoît Marie Joseph Deveaud, Marc-André Dupertuis, Andrea Crottini, Daniel Marti, Lars Kappei
2002
Journal Articles

Abstract

We have directly measured, under operating conditions, the distributions of carrier densities and temperatures in a gain-clamped semiconductor optical amplifier designed for operation at 1.55 mum. As expected, longitudinal spatial hole burning is much smaller than in conventional semiconductor optical amplifiers and the effects of gain clamping are clearly evidenced. The amplifier nevertheless shows a sizeable temperature increase for both the lattice and the carriers at high currents, which are attributed to contributions of Auger recombination, intervalence band absorption, and Joule and recombination heating. (C) 2002 American Institute of Physics.

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https://infoscience.epfl.ch/entities/publication/599faae2-bb4f-4df3-bbbe-7f508f7e7f86

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Benoît Marie Joseph Deveaud, Marc-André Dupertuis, Andrea Crottini, Daniel Marti, Lars Kappei
2002
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/599faae2-bb4f-4df3-bbbe-7f508f7e7f86

About this result

Related concepts (32)

Optical amplifier

An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Optical amplifiers are important in optical communication and laser physics. They are used as optical repeaters in the long distance fiberoptic cables which carry much of the world's telecommunication links.

Amplifier

An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It is a two-port electronic circuit that uses electric power from a power supply to increase the amplitude (magnitude of the voltage or current) of a signal applied to its input terminals, producing a proportionally greater amplitude signal at its output. The amount of amplification provided by an amplifier is measured by its gain: the ratio of output voltage, current, or power to input.

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.

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Density clamping and longitudinal spatial hole burning in a gain-clamped semiconductor optical amplifier

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