Optical Pulse Measurement Setup for Time Response and Dispersion
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Solution Overview
Problem
Existing optical property measurement systems require separate apparatuses for measuring different types of optical properties, such as time response and wavelength dispersion, limiting their versatility and efficiency.
Innovation Solution
An optical property measurement apparatus and method that utilizes a single apparatus to measure both time response and wavelength dispersion by employing a pulsed laser light source, pulse formation unit, optical system, waveform measurement unit, and analysis unit, which can switch between states to accommodate different measurement types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate apparatuses are used for measuring different optical properties (time response and wavelength dispersion), then measurement precision for each specific property is improved, but device complexity and the number of required systems increase
Solution Approach 1:
The patent implements a universal optical property measurement apparatus that can measure multiple types of optical properties (time response, wavelength dispersion, and other properties) using a single integrated system. The apparatus achieves this by incorporating a pulse formation unit that can generate different pulse configurations, an optical system that can be configured for different measurement modes, and an analysis unit that processes various measurement data types, thereby eliminating the need for multiple separate dedicated measurement systems while maintaining measurement precision
Solution Approach 2:
The patent employs dynamic configurability within the measurement apparatus, allowing the optical system to be adjusted and reconfigured for different measurement types. The pulse formation unit can dynamically generate different pulse trains with varying parameters, and the analysis unit can adaptively process different data types, enabling the same physical apparatus to perform multiple measurement functions without requiring separate static systems for each measurement type
2Reliability
If separate apparatuses are used for measuring different optical properties, then each apparatus can be optimized for its specific function, but the need for multiple systems reduces efficiency and increases operational complexity
Solution Approach 1:
The patent creates a multi-functional measurement apparatus that consolidates multiple measurement capabilities into a single reliable system. By integrating the pulse formation unit, configurable optical system, and adaptive analysis unit, the apparatus maintains high reliability for various measurement types while improving productivity by eliminating the need to operate and coordinate multiple separate systems, thereby reducing operational complexity and enhancing overall efficiency
3Adaptability or versatility
If a single apparatus is used to measure multiple optical properties, then versatility and efficiency are improved, but measurement precision for specific properties may be compromised
Solution Approach 1:
The patent employs dynamic configuration capabilities that allow the apparatus to optimize its measurement parameters and optical path for each specific measurement type. The pulse formation unit can generate pulse trains with parameters specifically tailored to the measurement at hand, and the analysis unit can apply appropriate processing algorithms for different optical properties, thereby maintaining high measurement precision across multiple measurement types while preserving versatility
Solution Approach 2:
The patent utilizes parameter changes in the pulse formation and optical configuration to adapt the apparatus for different measurement types. By adjusting pulse duration, repetition rate, and optical path parameters based on the specific measurement requirement (time response versus wavelength dispersion), the system maintains measurement precision while achieving versatility across different optical property measurements
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 simultaneous and efficient measurement of multiple optical properties using a single apparatus, enhancing versatility and reducing the need for multiple dedicated systems.
Implementation Method 1
a pulse formation unit configured to form a light pulse train including a plurality of light pulses having time differences and center wavelengths different from each other from light output from the measurement object
Implementation Method 2
a correlation optical system configured to receive the light pulse train output from the pulse formation unit and output correlation light including a cross-correlation or an auto-correlation of the light pulse train
Implementation Method 3
a waveform measurement unit configured to detect a temporal waveform of the correlation light
Implementation Method 4
an analysis unit configured to estimate a wavelength dispersion amount of the measurement object based on a feature value of the temporal waveform
Data Source
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AI summary
An optical property measurement apparatus includes a pulse formation unit, a waveform measurement unit, and an optical system. The pulse formation unit is capable of changing a temporal waveform of pulsed light in accordance with a type of optical property to be measured. The waveform measurement unit measures a temporal waveform of the pulsed light output from a measurement object after being incident on the measurement object. The optical system has an attenuation unit with an attenuation rate with respect to one wavelength component constituting the pulsed light larger than an attenuation rate with respect to another wavelength component constituting the pulsed light. The optical system is capable of switching between a first state in which the attenuation unit is arranged on an optical path of the pulsed light output from the measurement object and a second state in which the attenuation unit is not arranged on the optical path.