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Architecture for optical devices and bi-pass optical fiber amplifiers

A technology of optical equipment and optical fiber, which is applied in the fields of acousto-optic modulators, optical equipment and double-pass fiber amplifiers, modulation and generation of pulsed optical signals, and can solve problems such as complex architecture types, performance EDFA gain, time form distortion, etc.

Pending Publication Date: 2022-03-04
LEOSPHERE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reflection loss of the MAO causes a distortion of the time form of the signal emitted by the AODP by generating an unstable overmodulation and to prevent this distortion it is necessary to complicate this type of architecture by adding components such as one or more additional MAOs and need to inhibit the performance of certain components, for example need to reduce the gain of one or more EDFA

Method used

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  • Architecture for optical devices and bi-pass optical fiber amplifiers
  • Architecture for optical devices and bi-pass optical fiber amplifiers
  • Architecture for optical devices and bi-pass optical fiber amplifiers

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Embodiment Construction

[0098] The embodiments described below are by no means limiting, and variants of the invention comprising only said selection of features in isolation from other said features may be considered especially if the selection of features is sufficient to provide a technical advantage or to differentiate the invention with respect to the prior art (even if the selection is isolated in sentences including these other features). The selection includes at least one feature, which is preferably functional, without structural details, or with only a part of the structural details (if only this part is sufficient to confer a technical advantage or to distinguish the invention from the prior art).

[0099] figure 1 A prior art acousto-optic modulator (MAO) according to a so-called conventional arrangement is shown. MAO 1 comprises crystals 2 composed of a crystalline or amorphous material such as glass or quartz. It also includes a piezoelectric resonator 3 in contact with a face 4 of t...

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Abstract

Comprising an acousto-optic modulator (MAO), a laser, an upstream optical fiber extending between the laser and the MAO, a downstream optical fiber located downstream of the MAO, and a reflective device connected to the downstream optical fiber of the MAO. The optical device is characterized in that:-the upstream optical fiber is a polarization-maintaining optical fiber, and / or-the downstream optical fiber is arranged such that the travel time of a light beam propagating in the downstream optical fiber from the MAO up to the reflecting means is non-zero and less than or equal to half of the opening duration of the MAO, and / or-the MAO comprises a crystal, in which the MAO comprises a crystal, the input / output faces are flat and form a non-zero angle with each other and / or at least one of the two input / output faces forms a non-zero angle with the direction of propagation of sound waves in the crystal.

Description

technical field [0001] The present invention relates to the modulation and generation of pulsed optical signals. The invention also relates to amplification of light beams. The invention is especially aimed at generating pulsed signals of high speed, high power and small spectral width. [0002] The invention relates to an acousto-optic modulator, an optical device and a double-pass fiber amplifier. Background technique [0003] It is known to use prior art acousto-optic modulators (MAOs) for modulating optical signals and for generating signal pulses. Acousto-optic modulators are used to (among other things) modulate frequency signals and / or to modulate intensity to (among other things) generate signal pulses. One inherent drawback of prior art MAOs is their reflection loss corresponding to spurious optical signals reflected by the MAOs propagating in the opposite direction to the incident light. These reflective losses degrade the performance of the optical architectur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067G02F1/11
CPCH01S3/06708G02F1/11H01S3/06754H01S3/2333H01S3/10015H01S3/1003H01S2301/02H01S2301/08H01S3/08013H01S3/10061H01S3/1068
Inventor 珍-皮埃尔·卡里乌雷吉斯·格拉塞尔文森特·普勒尔
Owner LEOSPHERE