Multi-Input AWG for PON Power Meter
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional PON power meters require multiple filters to measure multi-wavelength signals, leading to increased device size, reduced portability, and maintenance difficulties due to the expansion of wavelength signals used in PON systems.
Innovation Solution
A PON power meter utilizing a multi-input type AWG (Arrayed Waveguide Grating) with a 1×M or N×M configuration, which includes a coupler and photodetection elements to separate and measure multiple wavelength signals using a single AWG, minimizing components and improving portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple filters are used to measure multi-wavelength signals, then measurement capability is improved, but device size increases and portability deteriorates
Solution Approach 1:
The patent combines multiple filter functions into a single AWG component that can separate multiple wavelengths simultaneously. The AWG integrates the functionality of what would traditionally require multiple discrete filters, thereby reducing device size while maintaining the ability to measure multi-wavelength signals.
Solution Approach 2:
The AWG serves as a universal component that can handle multiple wavelength measurements through a single device. By designing the AWG with multiple output ports corresponding to different wavelength bands, it provides multi-functional measurement capability without requiring separate filter components for each wavelength.
2Adaptability or versatility
If multiple filters are used to measure multi-wavelength signals, then measurement capability is improved, but maintenance difficulty increases
Solution Approach 1:
By merging multiple filter functions into a single AWG component, the patent reduces the number of parts that require maintenance. Instead of maintaining multiple separate filters, the system only needs to maintain one integrated AWG component, thereby improving ease of repair while preserving multi-wavelength measurement capability.
3Measurement precision
If multiple filters are used to measure multi-wavelength signals, then wavelength separation is improved, but device complexity increases
Solution Approach 1:
The patent extracts the wavelength separation function from multiple discrete filter components and consolidates it into a single AWG component. This extraction simplifies the overall device architecture by removing redundant components while maintaining effective wavelength separation through the AWG's inherent diffraction grating mechanism.
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 efficient measurement and real-time monitoring of multi-wavelength signals with reduced component count, simplifying the device configuration and enhancing portability by eliminating the need for multiple filters, while maintaining accurate signal detection and analysis.
Implementation Method 1
an AWG that distributes the signal output from the output line of the coupler to M output waveguides according to wavelength band
Implementation Method 2
a detection part configuring (S+P) detection channels by connecting a photodetection element to only (S+P) output waveguides
Data Source
AI summary
The present disclosure relates to a PON power meter using multi input type AWG, including a first input part into which a first signal is input, wherein the first signal has S optical signals whose wavelengths are different from each other; a second input part into which a second signal is input, wherein the second signal has P optical signals whose wavelengths are different from each other; an AWG that distributes the input signal to M output waveguides according to wavelength band; a detection part configuring (S+P) detection channels by connecting a photodetection element to only (S+P) output waveguides of the M output waveguides of the AWG; and an output part that outputs a strength of the signal detected by the detection part.