Optical Transceiver Ring Resonator Wavelength Control
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Solution Overview
Problem
Existing optical deflection devices require separate control of the transmission wavelength of the wavelength-separating filter, which increases the time needed for wavelength control and adds complexity and cost due to the need for additional control circuits.
Innovation Solution
The optical transceiver integrates a wavelength-separating filter composed of a ring resonator from one of the light sources, allowing the transmission wavelength to be controlled simultaneously with the wavelength of the light sources, eliminating the need for separate control of the wavelength-separating filter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate wavelength-separating filter is used, then wavelength separation function is achieved, but control time increases and device complexity increases
Solution Approach 1:
The patent combines the wavelength-separating filter and light source into a single integrated device. The filter and light source share common components including the ring resonator, waveguides, and control circuitry, allowing simultaneous control of both functions through a single control signal, thereby eliminating the time delay associated with separate control of the filter.
Solution Approach 2:
The integrated device performs multiple functions simultaneously: it acts as both a light source and a wavelength-separating filter. The ring resonator structure serves dual purposes of generating light at specific wavelengths and filtering received light at those same wavelengths, eliminating the need for separate control circuits and reducing overall device complexity.
2Reliability
If a separate wavelength-separating filter is used, then wavelength separation function is achieved, but device complexity and cost increase
Solution Approach 1:
The patent merges the control circuits of the wavelength-separating filter and light source into a single integrated control system. The control circuit simultaneously controls both the filter's transmission wavelength and the light source's output wavelength, eliminating the need for separate control circuits and reducing overall device complexity and cost.
Solution Approach 2:
The integrated device performs multiple functions through shared components. The ring resonator and waveguide structure serve both as the filtering mechanism and the light generation medium, eliminating the need for separate control circuits and reducing overall device 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 integration reduces the time required for wavelength control and simplifies the system by eliminating the need for additional control circuits, thereby reducing costs and improving efficiency.
Implementation Method 1
a wavelength-separating filter configured to separate, from the light received by the reception antenna, light having a same wavelength as the light output from a part of the plurality of light sources. The wavelength-separating filter is composed of the ring resonator of the part of the plurality of light sources.
Data Source
AI summary
An optical transceiver includes a plurality of light sources having a ring resonator, a reception antenna to receive light, and a wavelength-separating filter to separate, from the light received by the reception antenna, light of a same wavelength as the light output from a part of the plurality of light sources. The wavelength-separating filter is composed of the ring resonator included in the light source.