Stacked Ring Resonators for Polarization Detection
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Solution Overview
Problem
Current photonics chips with ring resonators face challenges in efficiently coupling light of different polarizations, leading to increased insertion loss and operational overhead.
Innovation Solution
The proposed structure includes a photonics chip with a first and second ring resonator positioned adjacent to an optical component, with the ring resonators having an overlapping relationship in a vertical direction. This configuration allows for weak optical coupling and distinguishes between transverse electric and magnetic polarizations based on intermittent light intensity dips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If ring resonators are used for coupling light on photonics chips, then light coupling function is achieved, but insertion loss increases and operational overhead increases
Solution Approach 1:
The patent transitions from planar ring resonators to three-dimensional stacked ring resonators. By adding the vertical dimension with multiple resonators at different heights (first ring resonator at lower level, second ring resonator at upper level), the system achieves enhanced light coupling functionality while maintaining compact footprint, thereby reducing insertion loss and improving operational efficiency without increasing operational overhead
2Measurement precision
If stacked ring resonators with overlapping relationship are used, then weak optical coupling is achieved and polarization detection is enabled, but device complexity increases
Solution Approach 1:
The patent implements a nested configuration where the first ring resonator and second ring resonator are stacked vertically with an overlapping relationship in the horizontal plane. The second ring resonator is positioned above and overlapping with the first ring resonator, creating a compact nested structure that enables polarization mode detection through weak optical coupling while minimizing the overall device footprint and structural complexity
Solution Approach 2:
By utilizing the vertical dimension for stacking the ring resonators while maintaining horizontal overlap, the patent achieves polarization detection functionality without proportionally increasing the planar footprint. This three-dimensional arrangement allows weak optical coupling for polarization discrimination while keeping the device structure relatively simple and compact
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 design minimizes insertion loss by ensuring weak optical coupling and allows for the detection of polarization modes by observing light intensity perturbations, thereby enhancing the operational efficiency of photonics chips.
Implementation Method 1
The first ring resonator and the second ring resonator have an overlapping relationship... allows for weak optical coupling and distinguishes between transverse electric and magnetic polarizations based on intermittent light intensity dips
Data Source
AI summary
Structures including a ring resonator and methods of fabricating a structure including a ring resonator. The structure comprises an optical component, a first ring resonator positioned adjacent to the optical component, and a second ring resonator spaced in a vertical direction from the first ring resonator. The first ring resonator and the second ring resonator have an overlapping relationship.