Wavelength Conversion Device Using Rotating Optical Fiber Plugs
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Solution Overview
Problem
Current photodynamic therapy instruments face challenges in flexible and precise wavelength switching due to the complexity of mechanical cooperation between semiconductor lasers and optical fibers, especially when multiple wavelengths are required for different treatments.
Innovation Solution
A wavelength conversion device with a base, optical fiber plugs, and a micro-switch device that allows for simple mechanical structure coupling and precise positioning of optical fibers, enabling quick and accurate switching between different wavelengths by rotating the optical fiber displacement disk and using a drive gear system to align and position optical fiber plugs with optical fiber output interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple semiconductor lasers with different wavelengths are used, then wavelength versatility is improved, but device complexity increases due to multiple optical fiber ports
Solution Approach 1:
A single optical fiber output port is designed to support multiple wavelengths by incorporating an optical fiber plug with multiple optical fibers, each corresponding to a different wavelength. The plug can be rotated to align different optical fibers with the output port, enabling one port to serve multiple wavelength functions.
Solution Approach 2:
Multiple optical fibers are integrated within a single optical fiber plug structure. The plug contains several optical fibers arranged in specific positions, allowing multiple wavelength channels to be nested within one interchangeable component that connects to the output port.
2Reliability
If precise mechanical cooperation between semiconductor laser and optical fiber coupling interface is implemented, then coupling efficiency is improved, but switching flexibility deteriorates
Solution Approach 1:
The optical fiber coupling system is segmented into interchangeable plugs that can be easily replaced or rotated. Each plug maintains precise mechanical alignment features for reliable coupling, while the modular design allows quick switching between different wavelength configurations without adjusting the entire system.
Solution Approach 2:
The optical fiber plug incorporates rotational capability, allowing dynamic switching between different optical fibers within the same plug. This dynamic feature enables wavelength switching without mechanical repositioning of the entire laser-fiber coupling interface, maintaining precision while improving flexibility.
Data Source
AI summary
A wavelength conversion device disclosed adopts a drive gear and driven gear as a main transmission structure, and disposes optical fiber plugs at a center of the driven gear. When a central shaft of the driven gear is unmovable, the rotation of the drive gear will drive the driven gear to rotate, and the rotation of driven gear will drive the optical fiber insertion rod to move up and down, thereby completing an insertion-extraction operation of the optical fiber insertion rod. When the central shaft of the driven gear is movable, i.e., when the optical fiber plugging rod is completely above the baseplate, the driven gear is locked with the optical fiber plug and thus they both cannot be rotated about their own axis, the driven gear will drive the fiber displacement plate to rotate along the drive gear under the action of the drive gear, thereby realizing the rotational translation of the optical fiber plugs, and reaching the switching wavelengths of laser at the optical fiber output interface. The wavelength conversion device is simple and easy for ordinary medical personnel to operate, thereby promoting the development of laser therapeutic instruments in the medical field.