Optical Fiber Array Polarizing Plate for Polarization Control
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Solution Overview
Problem
In optical measurement systems, multimode optical fibers often face difficulties in transmitting and receiving light with a specific polarization plane due to the coexistence of polarized waves and modes, leading to challenges in light modulation and measurement.
Innovation Solution
An optical fiber array comprising a support with a single-mode optical fiber and multimode optical fibers, where a polarizing plate is placed on the end face of the support to cover the multimode fibers, allowing light with a specific polarization plane to propagate through the single-mode optical fiber and be transferred to the multimode fibers, reducing coupling loss and enabling efficient light modulation and measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multimode optical fibers are used for light transmission, then the fiber can accept multiple modes and polarizations, but light with a specific polarization plane cannot be effectively transmitted due to coexistence of polarized waves and modes
Solution Approach 1:
A polarizing plate is introduced as an intermediary component between the light source and the multimode optical fiber. This polarizing plate filters the incident light to provide a specific polarization plane before the light enters the multimode fiber, enabling reliable polarization-specific light transmission while still utilizing the multimode fiber's ability to accept multiple modes
Solution Approach 2:
The invention applies different properties to different parts of the optical system: the input end uses a polarizing plate to enforce specific polarization characteristics, while the output end uses a polarizer to select specific polarization components. This local differentiation of optical properties enables controlled polarization transmission through the multimode fiber
2Reliability
If a polarizing plate is added to the optical fiber array, then light with specific polarization plane can propagate through multimode fibers, but the device complexity increases
Solution Approach 1:
The polarizing plate is integrated directly onto the end face of the optical fiber array, merging the polarization control function with the fiber array structure itself. This integration approach minimizes additional components and simplifies the overall device structure while still achieving reliable polarization-specific light transmission
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
This configuration ensures effective propagation and measurement of light with a specific polarization plane, reducing coupling loss and improving the efficiency of light modulation and measurement processes by utilizing the polarization maintaining characteristics of the single-mode optical fiber and the polarizing plates to manage light polarization.
Implementation Method 1
a polarizing plate provided on an end face of the support, wherein the single-mode optical fiber has polarization maintaining characteristics
Data Source
AI summary
An optical fiber array includes a support, a single-mode optical fiber and a plurality of multimode optical fibers, the single-mode optical fiber and the multimode optical fibers being arranged on the support, and a polarizing plate provided on an end face of the support, wherein the single-mode optical fiber has polarization maintaining characteristics, an end face of the single-mode optical fiber and end faces of the multimode optical fibers face the end face of the support, and the polarizing plate covers the end faces of the multimode optical fibers.