Indirect Heating Optical Modulator with Phase-Change Material
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Solution Overview
Problem
Existing optical modulation tools are not entirely satisfactory in terms of efficiency and reliability for data and information transmission in optical communication systems.
Innovation Solution
The use of phase-change materials (PCM) in optical devices, where thermal energy is indirectly applied to adjust the structural phase of the PCM, thereby manipulating light characteristics such as frequency or intensity in waveguides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If direct heating is applied to phase-change materials for optical modulation, then the modulation speed is improved, but the reliability and fatigue life of the optical device deteriorate due to thermal stress and material degradation
Solution Approach 1:
The patent introduces a thermal conductor layer as an intermediary between the heater and the phase-change material. This mediator enables indirect heating through thermal conduction, which reduces thermal stress and improves reliability while still achieving fast modulation speeds. The thermal conductor layer acts as a buffer that transfers heat efficiently without causing direct thermal shock to the phase-change material.
2Speed
If higher power is used to achieve faster phase transition, then the modulation speed is improved, but the energy consumption and heat generation increase, leading to reduced device stability
Solution Approach 1:
The patent changes the thermal conduction parameters by introducing a thermal conductor layer with optimized thermal conductivity. This allows the system to achieve the same phase transition speed with lower power input, as the thermal conductor efficiently directs and concentrates the heat flow to the phase-change material, reducing energy waste and heat generation in surrounding areas.
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 improves the reliability of phase-change materials, extends the fatigue life of optical devices, and ensures stable operation by employing indirect heating mechanisms.
Implementation Method 1
a heating member (50) on the thermal conducting member (40) and distant away from the light modulator (30) and the waveguide (10), wherein the heat produced from the heating member (50) is transferred to the light modulator (30) through the thermal conducting member (40)
Implementation Method 2
a thermal conducting member (40) between the light modulator (30) and the heating member (50), wherein the heat produced from the heating member (50) is transferred to the light modulator (30) through the thermal conducting member (40)
Implementation Method 3
The light modulator (30) includes a phase-change material (31) and is in direct contact with an outer surface (120) of the waveguide (10)... the structural phase of the light modulator (30) is changed according to control
Data Source
AI summary
One embodiment of the present disclosure provides an optical device which includes a waveguide and a light modulator. The light modulator includes a phase-change material and is in direct contact with an outer surface of the waveguide. The optical device also includes a thermal conducting member. The thermal conducting member is positioned on the light modulating member. The optical device further includes a heating member. The heating member is placed on the thermal conducting member and is distant away from the light modulator and the waveguide. The heat produced from the heating member is transferred to the light modulator through the thermal conducting member thereby inducing a phase transition of the light modulator.