Perpendicular Waveguide Coupling for 90-Degree Polarization Rotation
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Solution Overview
Problem
Existing waveguide technologies face challenges in achieving seamless and dependable connections while accommodating polarization rotation, which is crucial for optimizing the performance of optical systems.
Innovation Solution
The solution involves arranging the first and second waveguides perpendicularly to enable a 90-degree polarization rotation, using an optical medium like an optical wire bond or photonic wire bonding (PWB) to couple the chips, and employing thermoelectric coolers (TECs) for temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If waveguides are connected using existing coupling methods, then connection effectiveness is achieved, but polarization rotation in transmitted signals cannot be accommodated
Solution Approach 1:
The patent introduces a vertical dimension by placing chips on opposite surfaces of a support structure, enabling the first and second waveguides to be oriented perpendicular to each other. This spatial arrangement allows the system to accommodate polarization rotation by routing light through three-dimensional space rather than confined to a single plane, thus resolving the contradiction between maintaining connection effectiveness and accommodating polarization changes.
Solution Approach 2:
The support structure serves as an intermediary element that enables the perpendicular arrangement of waveguides on opposite surfaces. This intermediate component facilitates the polarization rotation function while maintaining the optical connection between chips, allowing the system to adapt to polarization changes without compromising connection effectiveness.
2Adaptability or versatility
If chips are arranged perpendicularly to enable polarization rotation, then polarization management is improved, but device complexity increases
Solution Approach 1:
The support structure performs multiple functions: it provides mechanical support for chips on opposite surfaces, enables the perpendicular waveguide arrangement for polarization rotation, and facilitates optical coupling between the chips. By consolidating these functions into a single component, the patent reduces overall device complexity while maintaining improved polarization management capability.
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 approach ensures a robust and adaptable connection that effectively manages polarization changes, enhancing efficiency and reliability in optical communication and signal processing systems.
Implementation Method 1
an optical medium to couple the first waveguide with the second waveguide
Implementation Method 2
The first plane of the first chip is arranged to be perpendicular to a second plane of the second chip to enable a polarization rotation
Data Source
AI summary
An aspect of the disclosure is related to an apparatus consisting of a first chip including a first waveguide and a second chip including a second waveguide. The apparatus further includes a medium to couple the first waveguide with the second waveguide. The first plane of the first chip is arranged to be perpendicular to a second plane of the second chip to enable a polarization rotation.