Asymmetric Ring Resonator Layout to Suppress Nonlinear Effects
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Solution Overview
Problem
Existing ring resonators face the risk of nonlinear effects becoming apparent, especially when high optical intensity is input, leading to distorted transmission spectra and restricted optical intensity output.
Innovation Solution
The design incorporates a ring resonator with non-parallel waveguide directions and a longer heater-wrapped waveguide part, optionally with a thermal insulation structure, to prevent nonlinear phenomena and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high optical intensity is input to the ring resonator, then the filtering function is enhanced, but nonlinear effects become apparent causing distorted transmission spectra
Solution Approach 1:
The ring resonator is segmented into multiple waveguide parts with different lengths (first, second, and third waveguide parts). The third waveguide part is specifically designed to be longer than the first and second waveguide parts, creating asymmetric path lengths that reduce nonlinear optical effects while maintaining the filtering function.
Solution Approach 2:
The patent introduces asymmetric design elements including non-parallel directions for the first and second waveguide parts, and different lengths for the waveguide parts. This asymmetry prevents the formation of standing waves and reduces nonlinear effects such as four-wave mixing, allowing high optical intensity to pass through without distortion.
2Use of energy by stationary object
If the heater is disposed along the third waveguide part, then power consumption is reduced, but the structure becomes more complex
Solution Approach 1:
The heater is locally disposed only along the third waveguide part rather than uniformly along the entire ring resonator. This localized heating approach reduces power consumption by heating only the necessary section to achieve the filtering function, while the asymmetric structure with non-parallel waveguide parts maintains structural integrity without requiring additional complex components.
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 configuration effectively prevents nonlinear effects while maintaining low power consumption, ensuring stable optical intensity and reduced distortion in transmission spectra.
Implementation Method 1
a heater disposed along a third waveguide part
Implementation Method 2
a thermal insulation structure disposed along the third waveguide part
Data Source
AI summary
A ring resonator in which a nonlinear effect is prevented from becoming apparent, and a method for manufacturing such a ring resonator are provided. A ring resonator according to the present disclosure includes an input waveguide, an output waveguide, and a ring waveguide including a first waveguide part optically connected to the input waveguide, a second waveguide part optically connected to the output waveguide, two curved waveguide parts each connecting the first and second waveguide parts to each other, and a heater disposed along a third waveguide part, the third waveguide part being a longer one of the two waveguide parts. Lengths of the two waveguide parts are different from each other. A first direction along the first waveguide part and a second direction along the second waveguide part are not parallel to each other.