Optical Testing Device for Polarity and Loss Measurement
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Solution Overview
Problem
Current optical testing devices lack the capability to effectively determine optical array polarity and measure optical signal intensity or loss for both singlemode and multimode optical fibers across various transmission wavelengths, requiring multiple devices and complex setups.
Innovation Solution
An optical testing device equipped with a position sensing detector and a photodetector, where the position sensing detector is responsive to a first range of wavelengths (350-1000 nm) and the photodetector is responsive to a second range (700-1600 nm), allowing for simultaneous detection of optical signal positions and intensities across different wavelengths, with a processor determining polarity and loss based on the data from both detectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple separate testing devices are used to test different optical fiber types and wavelengths, then measurement precision and reliability are improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent combines multiple testing functions (polarity determination, optical loss measurement, intensity measurement) for both multimode and singlemode fibers into a single integrated optical testing device. The device includes a position sensing detector for polarity and intensity, and a photodetector for optical loss, allowing one device to perform what previously required multiple separate devices.
Solution Approach 2:
The optical testing device is designed with universal functionality to test both multimode and singlemode optical fibers across different wavelengths (850nm, 1300nm, 1310nm, 1550nm). The device adapts its detection methods based on the fiber type being tested, providing multi-functional capability in a single instrument.
2Measurement precision
If multiple separate testing devices are used for different optical fiber types, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent combines multiple testing functions (polarity determination, optical loss measurement, intensity measurement) for both multimode and singlemode fibers into a single integrated optical testing device. The device includes a position sensing detector for polarity and intensity, and a photodetector for optical loss, allowing one device to perform what previously required multiple separate devices.
Solution Approach 2:
The optical testing device is designed with universal functionality to test both multimode and singlemode optical fibers across different wavelengths (850nm, 1300nm, 1310nm, 1550nm). The device adapts its detection methods based on the fiber type being tested, providing multi-functional capability in a single instrument.
3Ease of operation
If a single integrated testing device is used for all optical fiber types, then ease of operation and device simplicity are improved, but measurement precision may deteriorate
Solution Approach 1:
The patent applies different detection methods tailored to specific fiber types and wavelengths. For multimode fibers at 850nm and 1300nm, it uses position sensing detection for polarity and intensity. For singlemode fibers at 1310nm and 1550nm, it uses photodetector-based optical loss measurement, ensuring optimal precision for each fiber type.
Solution Approach 2:
The device changes its operational parameters based on the fiber type being tested. It switches between position sensing detection and photodetector detection modes, and adjusts wavelength selection (850nm, 1300nm, 1310nm, or 1550nm) according to the specific testing requirements, maintaining high precision across different scenarios.
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
Enables comprehensive testing of optical fiber cables by determining polarity and loss for both singlemode and multimode fibers across multiple wavelengths, reducing the need for multiple devices and simplifying the testing process while improving cost-effectiveness.
Implementation Method 1
a position sensing detector having an optical sensing area of a first material that is photosensitive to a first range of wavelengths
Implementation Method 2
a photodetector of a second material that is different than the first material and is photosensitive to a second range of wavelengths
Data Source
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AI summary
An optical testing device is provided. The testing device includes a position sensing detector (PSD) having an optical sensing area that is optically responsive to a first range of wavelengths. The PSD receives a plurality of optical signals having wavelengths within the first range and emitted through a respective plurality of optical fibers and detects a plurality of positions where the optical signals impinged on the optical sensing area for determining array polarity. The PSD receives a plurality of first optical signals having wavelengths within the first range and detects the polarity and a plurality of optical intensities of the first optical signals. The testing device includes a photodetector that is optically responsive to a second range of wavelengths different than the first range. The photodetector receives a plurality of second optical signals within the second range and detects a plurality of optical intensities of the second optical signals.