Polarization-Diversity Optical Supply for Stable Power Split
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Solution Overview
Problem
The increasing I/O capacities of electronic processing chips are not adequately served by electrical signals due to limited chip package sizes, necessitating the use of optical signals for interconnects, which face challenges with polarization fluctuations in non-polarization-maintaining optical fibers.
Innovation Solution
A polarization-diversity optical power supply system that generates orthogonal polarization components using distinct optical frequencies, accommodating random polarization fluctuations and enabling equal-power split at a passive polarization splitter for polarization-sensitive modulation devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polarization-maintaining fibers are used to ensure stable polarization for polarization-sensitive modulation devices, then signal integrity is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The patent changes the parameter of light frequency by generating two light outputs with different optical frequencies that are time/frequency orthogonal. This frequency differentiation allows the system to distinguish between polarization components without requiring polarization-maintaining fiber, thereby resolving the contradiction between signal integrity and manufacturing cost.
Solution Approach 2:
The patent introduces a polarization combiner as an intermediary device that receives two light outputs with different frequencies and combines them into mutually orthogonal polarization components. This intermediary enables the system to maintain signal integrity through frequency-based differentiation rather than relying on expensive polarization-maintaining fiber infrastructure.
2Stability of the object's composition
If polarization-maintaining fibers are used to maintain equal power split, then power balance is improved, but device complexity increases
Solution Approach 1:
The system changes the frequency parameter of the light outputs to create time/frequency orthogonality. This allows the passive polarization splitter to maintain equal power balance without requiring complex polarization-maintaining fiber, as the frequency difference enables clear distinction between signal components.
Solution Approach 2:
The patent makes the optical communication system universal by enabling it to work with standard non-polarization-maintaining fiber through frequency-based differentiation. The polarization combiner and splitter configuration provides multi-functionality, handling both polarization diversity and frequency separation in a single system architecture.
3Ease of manufacture
If standard non-polarization-maintaining fibers are used to reduce cost, then manufacturing cost decreases, but signal stability deteriorates due to random polarization fluctuations
Solution Approach 1:
The patent applies parameter changes by generating light outputs with different optical frequencies and making them time/frequency orthogonal. This frequency differentiation allows the system to maintain signal stability even when using cost-effective standard fiber, as the frequency separation enables the receiver to distinguish and properly process polarization components despite random polarization fluctuations in the fiber.
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 system effectively stabilizes optical signals by maintaining polarization diversity, ensuring reliable communication through non-polarization-maintaining fibers and enhancing data transmission capacity.
Implementation Method 1
a polarization combiner connected to receive the first and second light outputs of the light source at different respective input ports thereof, the polarization combiner being configured to generate, at an output port thereof, an optical output in which first and second mutually orthogonal polarization components carry light of the first and second light outputs, respectively
Data Source
AI summary
Provided is an optical communication system comprising a polarization-diversity optical power supply capable of supplying light over a non-polarization-maintaining optical fiber to a polarization-sensitive modulation device. In an example embodiment, the polarization-diversity optical power supply operates to accommodate random polarization fluctuations within the non-polarization-maintaining optical fiber and enables an equal-power split at a passive polarization splitter preceding the polarization-sensitive modulation device.