Optical Waveguide Hinge Layout for Uniform Temperature Tuning
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Solution Overview
Problem
Existing optical waveguide devices face challenges in uniformly controlling temperature, which affects the wavelength-tunability and efficiency of laser apparatuses, particularly in distributed Bragg reflector laser systems.
Innovation Solution
The optical waveguide device incorporates a peripheral part with an air pocket on a substrate, featuring a core layer and electrodes, along with edge and center hinges that connect the waveguide to the peripheral part, allowing for temperature uniformity through the strategic arrangement of hinges with varying densities and thicknesses, enhancing temperature control and wavelength-tunability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional monolithic integrated waveguide structure is used, then device simplicity is maintained, but temperature uniformity deteriorates
Solution Approach 1:
The waveguide structure is segmented into multiple sections with different hinge densities. The hinges connecting the waveguide to the substrate are divided into first hinges and second hinges with different thicknesses and densities, creating distinct thermal zones that collectively achieve uniform temperature distribution across the waveguide.
Solution Approach 2:
Different regions of the waveguide are assigned different hinge densities and thicknesses to create localized thermal characteristics. The first hinges have a first density and the second hinges have a second density, allowing each region to contribute differently to the overall thermal management, resulting in uniform temperature control.
2Temperature
If hinges with varying densities and thicknesses are introduced, then temperature uniformity improves, but manufacturing complexity increases
Solution Approach 1:
The hinge structure is divided into multiple segments (first hinges and second hinges) with different geometric parameters. This segmentation allows each hinge type to be optimized independently for its specific thermal function while maintaining compatibility with standard semiconductor manufacturing processes.
Solution Approach 2:
The hinge parameters (density, thickness) are systematically varied across different regions of the waveguide. By changing these geometric parameters in a controlled manner, the thermal properties are optimized without requiring fundamentally new manufacturing techniques, thus balancing performance improvement with manufacturing feasibility.
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 achieves improved temperature uniformity and wavelength-tunability in laser apparatuses by uniformly adjusting the temperature of the optical waveguide, thereby enhancing the efficiency of the laser light's peak wavelength tuning and phase control.
Implementation Method 1
a plurality of hinges disposed on the air pocket to connect the optical waveguide to the peripheral part in a second direction crossing the first direction
Implementation Method 2
an air pocket disposed on a central region of the substrate within the peripheral part
Data Source
AI summary
Provided are an optical waveguide device and a laser apparatus including the same. The optical waveguide device includes a peripheral part disposed on an edge region of a substrate, an air pocket disposed on a central region of the substrate within the peripheral part, an optical waveguide comprising a core layer, which is disposed on an upper portion of the substrate within the air pocket to extend in a first direction, and an electrode on the core layer, and a plurality of hinges disposed on the air pocket to connect the optical waveguide to the peripheral part in a second direction crossing the first direction.