Optical polarization rotator with adjustable polarization angles
A polarization rotator and polarization angle technology, applied in optics, nonlinear optics, instruments, etc., can solve the problem that the polarization rotator cannot satisfy the polarization rotation of input linearly polarized light at the same time
Active Publication Date: 2014-12-03
HUAZHONG UNIV OF SCI & TECH
View PDF4 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The present invention provides an adjustable polarization angle optical polarization rotator with alternating left and right electrodes periodically distributed to solve the problem that the existing polarization rotator cannot simultaneously satisfy the polarization rotation of input linearly polarized light with any polarization direction, the adjustment of the polarization rotation, and the low Loss, ease of manufacture and integration requirements, etc., to meet the needs of current large-capacity ultra-high-speed long-distance optical communication systems for rotation and adjustment of the polarization angle of linearly polarized light with arbitrary polarization directions
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
[0081] A polarization-angle-adjustable optical polarization rotator with periodic distribution of left and right electrodes, consisting of input, polarization rotation and output waveguides, such as figure 1 As shown, they consist of a lower cladding layer 4, a waveguide layer 3, and an upper cladding layer 2 grown sequentially from bottom to top on a substrate 5; the polarization rotation waveguide also includes a substrate backside electrode layer 6 and a top electrode layer 1 ( The starting electrode can also be on the top right). The substrate 5 is sapphire, and the lower cladding layer 4 and the upper cladding layer 2 are aluminum gallium nitride (Al 0.7 Ga 0.3 N), the waveguide layer 3 is aluminum gallium nitride (GaN / Al 0.3 Ga 0.7 N) superlattice, the back electrode layer 6 and the top electrode layer 1 are titanium-copper (Ti-Cu);
[0082] The substrate back electrode, the substrate and all lower cladding layers have the same width in the x direction, the width of ...
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 provides an optical polarization rotator with adjustable polarization angles. The optical polarization rotator comprises an input waveguide, a polarization rotating waveguide and an output waveguide sequentially connected, wherein the three waveguides sequentially comprise an upper cladding (2), a guided wave layer (3), a lower cladding (4) and a substrate (5) from top to bottom; a top electrode layer (1) is further arranged on the upper cladding (2) by the polarization rotating waveguide; a substrate backface electrode layer (6) is further arranged below the substrate (5). According to the invention, the problems that the existing polarization rotator cannot simultaneously meet the requirements about the polarization rotation, the adjustment of polarization rotation, low loss, good easiness in manufacture and integration of input linearly polarized light with any polarization direction are solved, so that the demands about rotation and adjustment of the polarization angles of the input linearly polarized light with any polarization direction from the existing high-capacity superspeed long-distance optical communication system are met.
Description
technical field [0001] The invention belongs to the field of integrated optoelectronic devices, and in particular relates to an optical polarization rotator with adjustable polarization angle and periodic distribution of left and right electrodes. Background technique [0002] With the rapid popularization of the Internet, multimedia digital entertainment, online shopping, high-definition video, wireless 3G and other services have become the necessities of people's daily life, triggering the explosive growth of network information, especially the rapid rise of mobile Internet, Internet of Things, cloud The large-scale deployment of computing, big data mining, and smart city construction has triggered the demand for massive information transmission and promoted the continuous upgrading and expansion of optical communication systems. In the application of large-capacity ultra-high-speed long-distance optical communication, polarization multiplexing technology can double the sy...
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): G02F1/01
Inventor 李洵李蔚王涛
Owner HUAZHONG UNIV OF SCI & TECH