In-fiber transmission band-pass echo wall microcavity filter and manufacturing method thereof
A whispering wall and filter technology, applied in the field of filters, can solve problems such as difficult debugging and control, inability to realize optical signal transmission band-pass filtering, poor stability, etc., and achieve low control difficulty, high degree of integration, and stability Good results
Active Publication Date: 2020-08-04
CHONGQING UNIV
View PDF8 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The present invention provides an in-fiber transmission bandpass whispering gallery microcavity filter and a manufacturing method thereof to solve the problem that the current bandpass filter based on the whispering gallery microcavity cannot realize optical signal transmission bandpass filtering, has poor stability and debugging and Problems that are difficult to control
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
[0031] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.
[0032] In the description of the present invention, unless otherwise specified and limited, it should be noted that the term "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be Directly connected or indirectly connected through an intermediary, those skilled in the art can understand the specific meanings of the above terms according to specific situations.
[0033] see figure 2 , is 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 provides an in-fiber transmission band-pass echo wall microcavity filter and a manufacturing method thereof. The filter comprises a cladding plane formed on one side of an optical fiber,and a groove is arranged in the cladding plane; the groove comprises a first groove edge parallel to the optical fiber and two second groove edges perpendicular to the optical fiber; the two second groove edges are symmetrical relative to a first axis perpendicular to a center of the first groove edge; two waveguide structures which are symmetrical along the first axis are arranged in the groove,each waveguide structure comprises a prism waveguide and curved waveguides, a bottom surface of the prism waveguide is trapezoidal, the first side surface of the prism waveguide is arranged on the corresponding second groove edge, and the second side surface which is parallel to the first side surface and is smaller than the first side surface of the prism waveguide is connected with first ends of the curved waveguides; the second ends of the curved waveguides extend to be connected with the first groove edge, and the two curved waveguides are bent towards the first axis; and an echo wall micro-cavity located between the two curved waveguides is further arranged in the groove, and a fiber core section which extends out of the corresponding second groove edge and is connected with a fibercore of the optical fiber covers an inner portion of the waveguide structure.
Description
technical field [0001] The invention belongs to the field of filters, in particular to an in-fiber transmission bandpass whispering gallery microcavity filter and a manufacturing method thereof. Background technique [0002] The narrowband bandpass filter is an indispensable device for optical signal filtering and denoising in optical communication systems, and it is also the key to selecting laser wavelengths for lasers. The bandwidth of filters based on Fiber Bragg Grating (Fiber Bragg Grating, FBG) and Fabry-Perot Interferometer (Fabry-Perot Interferometer, FPI) is limited by the working principle or processing technology, and its quality factor is usually lower than 10 5 order of magnitude. The quality factor of the whispering gallery microcavity using continuous total reflection to limit the light field can reach 10. 9 Therefore, the whispering gallery microcavity is an ideal choice for ultra-narrow filters. [0003] Existing filters based on whispering gallery micro...
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 IPC IPC(8): G02B6/293
CPCG02B6/29337G02B6/2934
Inventor 史磊磊朱涛
Owner CHONGQING UNIV