Adjustable dispersion compensation device based on liquid crystal array technology
A liquid crystal array and dispersion compensation technology, which is applied to instruments, electrical components, electromagnetic wave transmission systems, etc., can solve the problems that the adjustment time is difficult to meet the requirements of milliseconds, and the structure is complex, and achieves a simple structure, improved response speed, and performance. stable effect
Active Publication Date: 2011-06-15
GUANGXUN SCI & TECH WUHAN
View PDF5 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, its structure is complex, multiple PBSs are required, and dispersion adjustment needs to be carried out through temperature control, and the adjustment time is difficult to meet the requirements of milliseconds in communication systems
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038] The tunable dispersion compensation device based on the liquid crystal array technology of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.
[0039] like figure 1 Shown, the tunable dispersion compensating device based on liquid crystal array technology of the present invention is made of fiber collimator 11,18, polarizing beam splitter 12, half-wave plate 13, PMD (polarization mode dispersion) compensation plate 14, The liquid crystal arrays 15, 16 and the total reflection prism 17 are arranged in order according to the optical path to realize adjustable dispersion compensation for multiple channels. The multiple channels are standard channels specified by ITU-T, or within the working range of the device. A channel with an arbitrary wavelength as the center wavelength. Wherein, the fiber collimator includes an input collimator 11 and a receiving collimator 18, and the polarizing beam splitter 12 a...
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
Login to View More Abstract
The invention relates to an adjustable dispersion compensation device based on the liquid crystal array technology, and the adjustable dispersion compensation device is composed of a fiber collimator, a polarizing beam splitter, a half wave plate, a PMD (polarization mode dispersion) compensator, a liquid crystal array and a total reflection prism which are sequentially arranged on an optical path, and is capable of realizing adjustable dispersion compensation on multiple channels. The fiber collimator comprises an input terminal collimator and a receiving terminal collimator, the polarizing beam splitter and the half wave plate cause the light incident to the liquid crystal array to be linear polarized light, and the polarization direction is parallel to the plane formed by an optical axis and an incident signal light ray; the total reflection prism is used for eliminating the deviation of a reflected signal light ray produced by adjusting the liquid crystal array on the surface of the liquid crystal array; and the PMD compensator carries out PMD compensation on signal light passing through the polarizing beam splitter and the half wave plate. In the invention, the liquid crystal array is utilized to realize dispersion control; the response speed of the device is greatly improved; the PDL (polarization dependent loss) and PMD are reduced; the structure is simple, no movable mechanical part is adopted, the performance is stable, and the reliability is high.
Description
technical field [0001] The invention relates to an adjustable dispersion compensation device. In particular, it relates to an adjustable dispersion compensation device based on liquid crystal array technology that can perform dispersion compensation for optical signals of multiple wavelengths / channels in a dense wavelength division multiplexing system. Background technique [0002] With the rapid development of the Internet, high-speed DWDM systems have become mainstream. The continuous increase of system speed has increased the system's requirements for dispersion compensation accuracy, and the development of reconfigurable networks also requires that dispersion compensation can be dynamically adjusted according to line conditions. Therefore, adjustable dispersion compensation technology has become an inevitable trend. [0003] The rate of a single wavelength / channel has been increased from the previous 2.5Gb / s to the current 10Gb / s and 40Gb / s. With the continuous increase...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02F1/1335H04B10/18
Inventor 张博喻杰奎肖清明汤学胜王敏张鹏陈建宇
Owner GUANGXUN SCI & TECH WUHAN