Monolithic Optical Wavelength Manipulator for Compact Signal Processing
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Solution Overview
Problem
Conventional optical devices for waveform and wavelength modulation are large in size, limiting their integration into optical communication systems, and have slow response times that hinder processing of data packets and bit-level signals, leading to higher costs and lower reliability.
Innovation Solution
A monolithically integrated Optical Wavelength and Waveform Manipulator (OWWM) is developed, where optical components and signal-processing elements are integrated on a single substrate using microfabrication techniques, including curved grating mirrors and semiconductor waveguides, to achieve compactness and high processing speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional optical devices use discrete optical components and signal-processing elements, then the device can perform waveform and wavelength modulation, but the device becomes large in size and difficult to integrate
Solution Approach 1:
The patent merges multiple discrete optical components (diffraction gratings, collimating lenses, focusing lenses, waveguides) and signal-processing elements into a single monolithic integrated device structure. This integration reduces the overall device footprint while maintaining the capability to perform waveform and wavelength modulation functions that previously required separate components arranged in a large spatial configuration.
2Adaptability or versatility
If conventional optical devices use traditional signal-processing elements, then the device can modulate optical signals, but the response time is in milliseconds which is too slow for data-packet and bit-level processing
Solution Approach 1:
The patent replaces traditional mechanical or electro-optic signal-processing elements with semiconductor-based optical modulators that operate at much faster speeds. The integrated semiconductor waveguides and modulators enable response times in the nanosecond to sub-nanosecond range, allowing the device to handle data-packet and bit-level optical signals that require high-speed processing.
3Ease of operation
If conventional optical devices are made large in size, then the components can be fixed at various positions in three dimensional space, but the manufacturing cost increases and device reliability decreases
Solution Approach 1:
By integrating all optical components and signal-processing elements into a single monolithic device, the patent eliminates the need for precise three-dimensional positioning and alignment of discrete components. The monolithic structure inherently maintains stable relative positions of all functional elements, thereby improving device reliability and reducing manufacturing complexity and cost.
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
The compact OWWM enables efficient processing of bit-level and data-packet-level signals with high spectral resolution, facilitating integration into optical communication systems and reducing manufacturing costs while enhancing device reliability.
Implementation Method 1
a first curved grating mirror for decomposing a first optical signal into a plurality of focused spectral components
Implementation Method 2
a first curved grating mirror for decomposing a first optical signal into a plurality of focused spectral components
Implementation Method 3
a plurality of signal-processing elements for manipulating the plurality of focused spectral components, to generate a plurality of modulated spectral components
Implementation Method 4
The array of signal-processing elements 106 modulates the properties of the collimated spectral component beams such as optical amplitude and phase
Implementation Method 5
a second curved grating mirror for generating a second optical signal by combining the plurality of modulated spectral components
Data Source
AI summary
An integrated signal manipulator for manipulating an optical signal. The optical signal manipulator is integrated on a single material substrate by etching a curved grating mirror. The curved grating mirror decomposes a first optical signal into focused spectral components. These focused spectral components are manipulated by signal-processing elements that are realized on the same material substrate. The manipulated spectral components are then combined by another curved grating mirror, on the same material substrate, to generate a second optical signal.