Nano-Waveguide Optical Modulation for Laser Beam Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current laser technologies face limitations in enhancing optical performance, particularly in modulating the refractive index and beam characteristics of emitted light, which affects the coherence and directivity of laser outputs.
Innovation Solution
An optical modulation device comprising a waveguide with embedded nano-waveguides and electrode layers that apply modulation voltages to change the refractive index of the nano-waveguides, allowing for flexible modulation of light beam properties such as phase, amplitude, and polarization, integrated with a laser emitter to improve optical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional laser technology is used, then the basic laser function is achieved, but the optical performance (coherence and directivity) cannot be sufficiently improved
Solution Approach 1:
The waveguide structure is divided into multiple segments with different refractive indices, including a first waveguide section, a second waveguide section, and a third waveguide section. This segmentation allows independent control of different beam parameters (deflection angle, wavelength, intensity) through each section, thereby improving optical performance while maintaining adaptability
Solution Approach 2:
The patent introduces adjustable refractive index regions that can be dynamically modified by applying external signals (such as voltage or current). This enables real-time dynamic control of beam characteristics including deflection angle, wavelength, intensity, and beam shape, transforming a static waveguide into a dynamically adaptable optical modulation device
2Adaptability or versatility
If the refractive index is kept uniform, then the waveguide structure is simple, but the beam characteristics cannot be modulated
Solution Approach 1:
Different regions of the waveguide are assigned different refractive index characteristics: the first waveguide section has a first refractive index for beam deflection, the second waveguide section has a second refractive index for wavelength modulation, and the third waveguide section has a third refractive index for intensity control. This local differentiation enables multi-parameter beam modulation while maintaining a relatively simple overall waveguide structure
Solution Approach 2:
The patent modifies the refractive index parameter in specific regions of the waveguide to achieve beam modulation. By changing the refractive index in the first, second, and third waveguide sections, the device can control deflection angle, wavelength, and intensity respectively, adding functionality without significantly increasing 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
The solution enables active modulation of light beams, enhancing the optical performance of laser apparatuses by allowing for deflection, phase, wavelength, intensity, and beam shape adjustments, thereby improving coherence and directivity.
Implementation Method 1
Each of the plurality of second electrodes and a corresponding one of the plurality of first electrodes are configured to apply a modulation voltage to a corresponding one of the plurality of nano-waveguides to change a refractive index of the corresponding one of the plurality of nano-waveguides
Data Source
AI summary
An optical modulation device includes a waveguide, a first electrode layer, and a second electrode layer. The waveguide layer includes a waveguide body and a plurality of nano-waveguides embedded in the waveguide body and extending in an extension direction. The first electrode layer is arranged on one side of the waveguide layer and includes a plurality of first electrodes extending along the extension direction and arranged in a one-to-one correspondence with the plurality of nano-waveguides. The second electrode layer is arranged on a side of the waveguide layer facing away from the first electrode layer and includes a plurality of second electrodes extending in the extension direction and arranged in a one-to-one correspondence with the plurality of first electrodes.