Light Sensor Doped Regions Gap Elimination
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Solution Overview
Problem
Existing light sensors face inefficiencies due to the gap between doped regions and the input side of the light-absorbing medium, which reduces the speed of the sensor for a given voltage, necessitating higher voltages to maintain performance.
Innovation Solution
The optical device eliminates the gap between the doped regions and the input side of the light-absorbing medium, allowing the electrical field to form directly between the doped regions, thereby increasing the efficiency of the light sensor without the need for higher voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If voltage is increased to maintain sensor speed, then sensor speed is maintained, but voltage consumption increases
Solution Approach 1:
The patent changes the physical structure of the light sensor by eliminating the gap between doped regions and the input side of the light-absorbing medium. This structural parameter change improves the electrical field formation efficiency, allowing the sensor to achieve the same speed at lower voltage, thus resolving the contradiction between speed maintenance and voltage consumption reduction
2Ease of manufacture
If gap exists between doped regions and light-absorbing medium, then manufacturing is easier, but sensor efficiency decreases
Solution Approach 1:
The patent extracts and eliminates the gap between the doped regions and the input side of the light-absorbing medium. By removing this non-functional space, the electrical field can form more efficiently directly between the doped regions, improving sensor efficiency without significantly complicating the manufacturing process
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 configuration enhances the speed and efficiency of the light sensor by allowing the electrical field to form directly between the doped regions, reducing the required voltage and improving performance.
Implementation Method 1
These light sensors often employ a light-absorbing material that absorbs the received light signals
Implementation Method 2
When the light-absorbing material absorbs a light signal, an electrical current flows through the light-absorbing material
Implementation Method 3
During operation of the light sensor, an electrical field is applied across the light-absorbing material
Implementation Method 4
The light-absorbing medium includes doped regions. One or more of the doped regions each extends from within the light-absorbing medium to the input side of the light-absorbing medium
Data Source
AI summary
The optical device includes a waveguide on a base. The waveguide is configured to guide a light signal through a light-transmitting medium to a light sensor. The light sensor includes a sensor waveguide on the base. The sensor waveguide receives the light signal from the input waveguide. Additionally, the sensor waveguide includes a light-absorbing medium having an input side. The input side is interfaced with the light-transmitting medium such that at least a portion of the light signal received by the sensor waveguide travels through the input side of the light-absorbing medium upon being received by the sensor waveguide. The light-absorbing medium includes doped regions. One or more of the doped regions each extends from within the light-absorbing medium to the input side of the light-absorbing medium.