Integrated Optical Latch for High-Speed Switching
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Solution Overview
Problem
Existing digital electronics face switching speed limitations due to interactions between optical and electronic circuitry, leading to delays and increased complexity at the optical-electronic interface, necessitating improved optical switching and data control solutions.
Innovation Solution
An optically controlled optical latch device with integrated waveguide loops, nonlinear phase shifting elements, and tunable couplers, utilizing salicide heater structures for precise phase control and optical switching, allowing for independent control of optical signals without electronic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If optical circuits are used to improve switching speed, then switching speed is improved, but complexity increases at the optical-electronic interface due to conversion circuitry
Solution Approach 1:
The patent replaces electronic switching mechanisms with all-optical switching mechanisms. The optical latch uses optical signals to control optical signals through nonlinear optical effects in waveguide loops, eliminating the need for optical-to-electronic conversion circuitry and reducing interface complexity while maintaining high switching speeds
Solution Approach 2:
The optical latch device performs multiple functions using purely optical components: it stores optical data, switches optical signals, and controls optical pathways without requiring separate electronic conversion circuitry. The waveguide loops with nonlinear phase shifting elements provide both storage and switching functionality in an integrated optical system
2Adaptability or versatility
If conversion circuitry is added at the optical-electronic interface, then signal conversion is enabled, but switching delays increase
Solution Approach 1:
The patent extracts and removes the conversion circuitry from the system by implementing an all-optical latch that operates entirely with optical signals. This eliminates the time-consuming conversion steps while maintaining the necessary signal control capabilities through optical nonlinearities and interference effects
Solution Approach 2:
The patent uses optical interference and nonlinear optical effects as intermediaries to achieve signal control and switching. The waveguide loops create constructive and destructive interference patterns that enable optical signal modulation and storage without requiring electronic conversion, thereby reducing switching delays
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
Enables efficient optical switching and data control, reducing the influence of slower electronic circuits and complexity, allowing for precise control of optical states and improved data transmission rates in optical communication systems.
Implementation Method 1
a salicide heater structure for providing heat to the n individually tunable resonant elements
Implementation Method 2
a first nonlinear phase shifting element for phase shifting optical signals in the first integrated waveguide loop
Data Source
AI summary
Techniques are disclosed for optical switching and data control, without the interaction of electronic switching speeds. In one example embodiment, a common cavity optical latch is provided that that can hold an optical state for an extended period of time, and the operation of which is controlled optically. Optical phase control allows optical modal switching to be employed between two common optical cavities, using incident optical signals and the way in which the cavities manipulate the phase within them to lock in one or the other configuration, thereby forming an optical latch. The optical latch is implemented in an integrated fashion, such as in a CMOS environment.