Publication

All-Optical Reflectivity Tuning and Logic Gating in a GaAs/AlAs Periodic Layered Structure

Marc-André Dupertuis, François Morier-Genoud, Denis Martin
1992
Journal Articles

Abstract

The optical nonlinearity of a GaAs/AlAs periodic layered structure was experimentally investigated for the first time. The shift of the reflectivity peak with increasing intensity was observed. A reflectivity contrast of about 10:1 was obtained by varying the incident intensity. Hysteresis loops due to the response delay of both the electronic and the thermal nonlinearity were observed. All-optical logic operations were also demonstrated. A further improvement of the structure may lead to a new type of optical bistable device.

Official source

https://infoscience.epfl.ch/entities/publication/602ef9ec-8a08-408a-ae43-ee93a18786e2

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Marc-André Dupertuis, François Morier-Genoud, Denis Martin
1992
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/602ef9ec-8a08-408a-ae43-ee93a18786e2

About this result

Related concepts (28)

Logic gate

A logic gate is an idealized or physical device that performs a Boolean function, a logical operation performed on one or more binary inputs that produces a single binary output. Depending on the context, the term may refer to an ideal logic gate, one that has, for instance, zero rise time and unlimited fan-out, or it may refer to a non-ideal physical device (see ideal and real op-amps for comparison). In the real world, the primary way of building logic gates uses diodes or transistors acting as electronic switches.

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.

Inverter (logic gate)

In digital logic, an inverter or NOT gate is a logic gate which implements logical negation. It outputs a bit opposite of the bit that is put into it. The bits are typically implemented as two differing voltage levels. The NOT gate outputs a zero when given a one, and a one when given a zero. Hence, it inverts its inputs. Colloquially, this inversion of bits is called "flipping" bits. As with all binary logic gates, other pairs of symbols such as true and false, or high and low may be used in lieu of one and zero.

Related publications (1)

All-Optical Reflectivity Tuning and Logic Gating in a GaAs/AlAs Periodic Layered Structure

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