Wave Junction Structure for Nonlinear Optical Logic via Mode Coupling
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Solution Overview
Problem
Current optical communication systems face challenges in achieving nonlinearity, which is essential for optical logic devices, due to the linearity of optical materials and devices, hindering the development of integrated digital photonics and photonic devices.
Innovation Solution
A junction structure for wave propagation is developed, allowing selective coupling of waves between different wave propagation structures through energy level shifts, enabling orthogonal eigenmode waves to be coupled or decoupled based on similarity or orthogonality of wave mode functions, using means such as external bias or internal spontaneous nonlinearity induction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If optical materials and devices are used in conventional linear configurations, then optical communication can be achieved, but nonlinearity required for optical logic devices cannot be obtained
Solution Approach 1:
The optical system is segmented into distinct wave propagating structures (first and second structures) with different eigenmode sets, connected through a junction. This segmentation allows each structure to maintain its linear properties while the junction enables nonlinear optical logic operations through mode coupling control.
Solution Approach 2:
The junction structure acts as an intermediary between the first and second wave propagating structures. It provides the mechanism for selective coupling of eigenmode waves through energy level shifting, enabling nonlinear optical logic operations without requiring the bulk optical materials themselves to be nonlinear.
2Ease of operation
If junction structures are introduced to enable wave coupling, then selective wave propagation control is achieved, but device complexity increases
Solution Approach 1:
The junction structure utilizes energy level shifting as a controllable parameter to achieve selective wave coupling. By adjusting the energy levels of eigenmode waves through external bias or internal spontaneous nonlinearity, the coupling between different wave propagating structures can be dynamically controlled, providing ease of operation despite the structural complexity.
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 enables the creation of high-performance wave junction structures, diodes, and half-adders for photons and other waves, offering flexible control over wave propagation, low power consumption, and high directionality, surpassing limitations of conventional photonic devices.
Implementation Method 1
a means of energy level shift that shifts at least one of the first eigen-energy level and the second eigen-energy level to allow selective wave propagation between the first wave propagating structure and the second wave propagating structure through selective coupling of one wave of the first set of eigenmode waves to one wave of the second set of eigenmode waves
Implementation Method 2
The interior spontaneous nonlinearity induction means of the energy level shift means may have a resonant structure
Data Source
AI summary
Disclosed herein are a junction structure for wave propagation and a wave diode and a wave half-adder using the same. According to the present invention, the junction structure for wave propagation permits selective coupling of waves propagating through a junction plane between different wave propagation structures, whereby the wave junction structure, wave junction diodes and wave half-adders using waves including photons, surface plasmons, optomechanical phonons and their composite waves are realized to provide the same functions as those of electrical junction structures and application devices thereof.