Optics differentiator based on time-domain pulse shaping system

A time-domain pulse and differentiator technology, applied in the field of optical signal processing, can solve the problems of optical differentiator bandwidth, central wavelength and order of differentiation that cannot be adjusted during use, and achieve high compatibility

Active Publication Date: 2016-11-16
HUAZHONG UNIV OF SCI & TECH
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of the prior art, the present invention provides a photon differentiator based on a time-domain pulse shaping system, the purpose of which is to improve th...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optics differentiator based on time-domain pulse shaping system
  • Optics differentiator based on time-domain pulse shaping system
  • Optics differentiator based on time-domain pulse shaping system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0023] In the present embodiment, the first dispersion device (2) is composed of two cascaded dispersion values ​​of 500 ps / nm linearly chirped fiber Bragg grating LCFBG, and the total dispersion value is 1000 ps / nm; the second dispersion device (9) It consists of two linearly chirped fiber optic LCFBGs input from the opposite end with the same parameters, and the total dispersion value is -1000...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an optics differentiator based on a time-domain pulse shaping system. The optics differentiator comprises a mode-locked fiber laser MLL, a first dispersion device, an erbium-doped fiber amplifier EDFA, a Mach-Zehnder modulator MZM, a polarization controller PC, an arbitrary waveform generator AWG, an optical delay line ODL, a second dispersion device, and a frequency divider. The principle of a time-domain pulse shaping system is used, and spectral filtering characteristic of the differentiator is shifted to time domain from frequency domain. Through rationally designing a modulation signal generated by the arbitrary waveform generator AWG and changing the shape of the modulation signal, differential results in different orders and different bandwidths are obtained, and an optical differentiation function in flexibly adjustable order and bandwidth is realized. Various components used in the optics differentiator belong to common devices, and have good compatibility with an existing optical fiber communication system.

Description

technical field [0001] The invention belongs to the field of optical signal processing, and more specifically relates to a programmable optical differentiator. Background technique [0002] With the rapid increase of communication network transmission rate, the processing of high-speed signals in the electrical domain has approached the limit of rate and bandwidth. The use of photonic technology to realize signal generation, processing and calculation has been proposed as an effective solution to overcome the limit of electrical domain processing. Based on this purpose, some basic functional devices for optical domain signal processing corresponding to electrical domain signal processing have been extensively studied, among which photonic differentiators are an important device. A photonic differentiator is a device that can perform time-domain differential operations on optical signals in the optical domain. It can be used in the fields of optical sensing, optical pulse sh...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G02F2/00
CPCG02F2/00
Inventor 张敏明唐江刘德明
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap