Parallel Fiber Raman Modulation for Stable Multi-Wavelength Output
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Solution Overview
Problem
Existing optical radiation sources for multi-wavelength optical or photoacoustic imaging are complex and prone to performance instability due to numerous optical elements, which can be affected by environmental factors like airflow and temperature, making them difficult to deploy and maintain.
Innovation Solution
An optical radiation modulation device using a plurality of optical fibers arranged in parallel with couplers to distribute and collect optical radiation, where each fiber can modulate single-wavelength radiation into multi-wavelength radiation through stimulated Raman scattering, reducing the need for complex optical configurations and improving stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If numerous optical elements (lenses, mirrors, couplers) are used to construct optical paths for generating multi-wavelength optical radiation, then the functional capability to generate multi-wavelength radiation is achieved, but the device complexity increases and performance stability deteriorates due to environmental sensitivity
Solution Approach 1:
The patent replaces traditional mechanical optical elements (lenses, mirrors, free-space couplers) with an all-fiber optical system. Optical fibers and fiber couplers are used to guide and combine light, eliminating the need for complex free-space optical paths and mechanical alignment components. This substitution reduces device complexity while maintaining multi-wavelength generation capability through stimulated Raman scattering in the optical fibers.
2Adaptability or versatility
If numerous optical elements are used to generate multi-wavelength optical radiation, then wavelength diversity is achieved, but reliability deteriorates as optical element performance is easily affected by environmental factors (airflow, temperature)
Solution Approach 1:
The patent replaces free-space optical elements with all-fiber components. Optical fibers are enclosed structures that protect the light path from environmental factors such as airflow and temperature variations. The fiber couplers and stimulated Raman scattering media are integrated within the fiber structure, eliminating sensitivity to external environmental conditions and improving overall system reliability while maintaining multi-wavelength generation capability.
3Adaptability or versatility
If numerous optical elements and complex optical configurations are used, then multi-wavelength radiation can be generated, but ease of operation deteriorates making the system difficult to deploy
Solution Approach 1:
The patent replaces complex free-space optical configurations with a compact all-fiber system. The optical fibers can be easily routed and connected, and the fiber couplers are integrated components that do not require complex mechanical alignment. This makes the system much easier to deploy in various locations and applications, while still generating multi-wavelength optical radiation through stimulated Raman scattering in the optical fibers.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides stable and efficient generation of multi-wavelength optical radiation, enhancing the performance and portability of optical or photoacoustic imaging systems by minimizing free-space to optical fiber couplings, thus reducing instability and deployment complexity.
Implementation Method 1
the first optical fiber is operable to generate the multi-wavelength optical radiation based on stimulated Raman scattering such that wavelengths of the multi-wavelength optical radiation comprise wavelength of the single-wavelength optical radiation and at least one Stokes wavelength
Data Source
AI summary
An optical radiation modulation device that includes two or more optical fibers arranged optically in parallel, a first coupler coupled with the optical fibers, and a second coupler coupled with the optical fibers. The first coupler is operable to receive a single-wavelength optical radiation and to provide or distribute the single-wavelength optical radiation to the optical fibers. The second coupler is operable to receive optical radiations outputted by the optical fibers. The optical fibers include, at least: a first optical fiber operable to modulate the single-wavelength optical radiation provided or distributed to the first optical fiber to generate a multi-wavelength optical radiation for output to the second coupler; and a second optical fiber.