Dielectric Electrode Photonic Phase Shifter
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Solution Overview
Problem
Current electro-optic modulators and switches face challenges in reducing power consumption and improving efficiency, particularly in integrated optical systems where high dielectric constant materials are not effectively utilized to minimize power loss during operation.
Innovation Solution
The use of high dielectric constant materials, such as strontium titanate and barium strontium titanate, in photonic devices like phase shifters and switches, where these materials are integrated into the device structure to create a waveguide structure with a slab layer and ridge portion, allowing for efficient control of the electric field and reduced power consumption by minimizing photon absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If high dielectric constant materials are used in photonic devices, then power consumption is reduced and efficiency is improved, but device complexity increases due to integration requirements
Solution Approach 1:
The dielectric material is integrated within the waveguide structure itself, nesting the high dielectric constant material inside the optical path configuration. This allows the material to be embedded in the core region where it can modulate the optical mode effectively, reducing power consumption without requiring separate external components.
Solution Approach 2:
The patent employs composite material structures combining dielectric materials with high dielectric constants integrated into the waveguide. This composite approach enables efficient electric field confinement and optical modulation while managing the complexity through material-level integration rather than system-level assembly.
2Loss of energy
If dielectric electrodes are placed closer to the waveguide, then energy loss is reduced and electric field control is improved, but manufacturing precision requirements increase
Solution Approach 1:
The dielectric electrodes are nested within the waveguide structure, positioned in close proximity to the optical mode path. This integration allows the electrodes to be manufactured as part of the waveguide fabrication process, achieving close spacing while managing precision requirements through process integration.
Solution Approach 2:
The high dielectric constant material is placed specifically in regions where electric field enhancement is most beneficial for optical modulation. This localized placement optimizes energy efficiency by concentrating the dielectric effect where it most effectively reduces power consumption, rather than requiring uniform high precision throughout the entire device.
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 results in lower power consumption and enhanced efficiency by allowing the dielectric electrodes to be placed closer to the waveguide, reducing energy loss and enabling precise control of the electric field within the waveguide structure, thus improving the performance of photonic devices in optical systems.
Implementation Method 1
electro-optic (EO) modulators and switches have been used in optical fields. Some EO modulators utilize free-carrier electro-refraction, free-carrier electro-absorption, or the DC Kerr effect to modify optical properties during operation, for example, to change the phase of light propagating through the EO modulator or switch
Data Source
AI summary
Photonic devices are disclosed including a first cladding layer, a first electrical contact comprising a first lead coupled to a first dielectric portion, a second electrical contact comprising a second lead coupled to a second dielectric portion, a waveguide structure comprising a slab layer comprising a first material, and a second cladding layer. The slab layer may be coupled to the first dielectric portion of the first electrical contact and the second dielectric portion of the second electrical contact. The first dielectric portion and the second dielectric portion may have a dielectric constant greater than a dielectric constant of the first material.