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Method for realizing high-speed optical switch response and ultra-high-speed optical modulation optical switch device

A light-response, high-speed technology, applied in the field of optical switches, which can solve the problems of high power consumption and long delay

Active Publication Date: 2020-05-12
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

The main interconnection mode of network center and data center is mainly electrical interconnection, and electrical interconnection has disadvantages such as long delay, high power consumption, limited transmission rate and distance, etc., and optical interconnection can break through these bottlenecks to achieve high speed. , secure, low-power data transmission and exchange

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  • Method for realizing high-speed optical switch response and ultra-high-speed optical modulation optical switch device
  • Method for realizing high-speed optical switch response and ultra-high-speed optical modulation optical switch device

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Embodiment Construction

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described below.

[0018] The present invention proposes a method for realizing high-speed optical switching response, using high-power femtosecond lasers to generate optical filaments to modulate the phase of the signal light in the single arm of the Mach-Zehnder interferometer, so that the light in both arms of the Mach-Zehnder interferometer The signal generates interference, and the effect of high-speed modulation of the optical switch response is achieved by controlling the filament effect generated by the high-power femtosecond laser.

[0019] The principle is that the self-focusing effect of the laser and the plasma defocusing effect during the transmission process can overcome the diffraction effect by using a high-power pulsed laser to propagate a distance exceeding several times the Rayleigh length to ...

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Abstract

The invention provides a method for realizing high-speed optical switch response and an ultra-high-speed optical modulation optical switch device. High-power pulse laser is adopted, the defect that the propagation distance of a diffraction effect exceeds several times of Rayleigh length can be eliminated on the basis of the self-focusing effect and plasma defocusing effect of the laser in a transmission process; and therefore, an optical filament can be obtained. A large number of physical effects are involved in a laser filamentation process; an optical filament generation area is accompaniedby refractive index modulation, the response speed of the refractive index modulation is related to the pulse width and power of ultrafast laser; and when the peak power of the ultrafast laser reaches a certain threshold value, the frequency of the response of a liquid generated optical filament to refractive index modulation can reach gigahertz. The ultra-high-speed refractive index modulation is applied to an optical modulation optical switch to realize ultra-high-speed optical switch response.

Description

technical field [0001] The invention relates to optical switch technology, in particular to a method for realizing high-speed optical switching response and an ultra-high-speed optical modulation optical switch device. Background technique [0002] With the advent of the 5G era, the emergence of cloud computing, the development of the Internet of Things, and the rise of artificial intelligence, dynamic data exchange technology with high bandwidth and large data transmission capacity will be widely used in high-performance data-intensive computing. Prior Art 1: Kwack M J, Tanemura T, Higo A, et al. Opt. Express. 20(27), 28734-41(2012)]. The main interconnection mode of network center and data center is mainly electrical interconnection, and electrical interconnection has disadvantages such as long delay, high power consumption, limited transmission rate and distance, etc., and optical interconnection can break through these bottlenecks to achieve high speed. , Safe, low-powe...

Claims

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Application Information

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IPC IPC(8): G02B6/35G02F1/21
CPCG02B6/354G02F1/21G02F1/212
Inventor 冯吉军孙晓宇曾和平
Owner UNIV OF SHANGHAI FOR SCI & TECH
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