Spatial Optical 90° Mixer with High Mixing Efficiency
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A space light and mixer technology, applied in optics, instruments, optical components, etc., can solve the problems of difficult detection and control of the polarization state of weak signal light, complex overall structure, mismatch of light spots, etc., achieving compact structure and wide application. Prospects, the effect of huge application potential
Active Publication Date: 2017-08-29
CHANGCHUN UNIV OF SCI & TECH
View PDF6 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0007] The present invention solves the poor environmental adaptability of existing spatial light 90° mixers, low mixing efficiency caused by mismatching of local oscillator light and signal light spot, mismatch of polarization angle, difficulty in detecting and controlling the polarization state of weak signal light, and overall structure Complicating matters, a high-mixing-efficiency spatial-optical 90° mixer is proposed
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0022] like figure 1 As shown, the spatial light 90° mixer with high mixing efficiency of the present invention includes the following components: local oscillator laser 12, beam expander collimator mirror 13, positive lens 14, electrically controlled polarizer 15, the first non-polarization beam splitter Mirror 16, the second non-polarizing beam splitter 21, the third non-polarizing beam splitting mirror 26, the first polarizing beam splitting mirror 19, the second polarizing beam splitting mirror 27, the first right-angle reflective prism 18, the second right-angle reflective prism 20 , the third rectangular reflective prism 25, the first parallel plate 22, the second parallel plate 23, the first quarter wave plate 17, the second quarter wave plate 24, balance detector 28, electric power splitter 29 , an electrically controlled polarizer control cir...
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 discloses a free spatial optical 90-degree mixer device, belonging to the technical field of wireless communications. For solving the problems of the prior art, the device comprises a local oscillator laser, an expanded beam collimating lens, a positive lens, an electronic control polarizer, a first non-polarized beam splitter, a second non-polarized beam splitter, a third non-polarized beam splitter, a first polarized beam splitter, a second polarized beam splitter, a first right-angled reflecting prism, a second right-angled reflecting prism, a third right-angled reflecting prism, a first parallel flat plate, a second parallel flat plate, a first quarter wave plate, a second quarter wave plate, a balance detector, an electric power divider, an electronic control polarizer control circuit and a third quarter wave plate. Light spots of local oscillator light are converted into Airy disks by using the expanded beam collimating lens and the positive lens; the polarization state is controlled by the electronic control polarizer, the electric power divider, the electronic control polarizer control circuit and the third quarter wave plate, to realize consistent polarization state of the local oscillator light and signal light, so that the defect of loss of signal light energy in the original polarization control device is overcome.
Description
technical field [0001] The invention relates to a free space laser communication device, in particular to a space light 90° mixer with high frequency mixing efficiency, which belongs to the technical field of wireless communication. Background technique [0002] Laser wireless communication is a very important communication method in the field of wireless communication because of its advantages such as large communication capacity, high transmission rate, good confidentiality, strong anti-electromagnetic interference ability, light weight, small size, and low power consumption. In the field of high-speed wireless communication between ground and satellites, occasions that require high security and confidentiality of communication content (such as government, military department, security department), or places with strong electromagnetic interference (such as battlefields) and many other occasions have potential application prospects. [0003] Coherent laser communication, ...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.