Ring Resonator Phase Dithering for In-Band Auxiliary Optical Encoding
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Solution Overview
Problem
Existing techniques for encoding auxiliary information in optical signals often introduce overhead and complexity, adversely impacting signal integrity and efficiency, particularly in high-speed communication systems.
Innovation Solution
Implementing phase-dithering techniques using overcoupled ring resonators to encode auxiliary information in the phase of optical signals, minimizing amplitude modulation and eliminating the need for out-of-band communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional amplitude-based modulation techniques are used to encode auxiliary information, then the auxiliary information can be transmitted, but the signal integrity deteriorates and overhead increases
Solution Approach 1:
The patent changes the modulation parameter from amplitude to phase. By encoding auxiliary information in the phase of the optical signal rather than the amplitude, the system achieves reliable transmission of auxiliary information without degrading signal integrity, as phase modulation is more robust against amplitude fluctuations and noise.
Solution Approach 2:
The patent moves the auxiliary information encoding from the amplitude dimension to the phase dimension of the optical signal. This dimensional transition allows simultaneous transmission of main data and auxiliary information without mutual interference, eliminating overhead while maintaining signal integrity.
2Loss of information
If amplitude modulation is used to encode auxiliary information, then encoding can be achieved, but optical signal amplitude is significantly affected
Solution Approach 1:
The patent changes the modulation parameter from amplitude to phase. By encoding auxiliary information in the phase of the optical signal rather than the amplitude, the system achieves reliable transmission of auxiliary information without degrading signal integrity, as phase modulation is more robust against amplitude fluctuations and noise.
3Loss of information
If out-of-band communication is used to transmit auxiliary information, then auxiliary information can be conveyed, but system complexity increases
Solution Approach 1:
The patent merges the transmission of main data and auxiliary information into a single in-band optical signal by encoding both in the phase domain. This eliminates the need for separate out-of-band communication channels, thereby reducing system complexity while maintaining complete information transmission.
Solution Approach 2:
The phase modulation scheme serves multiple functions simultaneously: it transmits both main data and auxiliary information within the same signal band, eliminating the need for separate communication channels and reducing overall system 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
Ensures reduced complexity and improved signal integrity by encoding auxiliary information without significantly affecting optical signal amplitude, thereby enhancing communication efficiency.
Implementation Method 1
Implementing phase-dithering techniques using overcoupled ring resonators to encode auxiliary information in the phase of optical signals
Implementation Method 2
overcoupled ring resonators
Data Source
AI summary
A system can include one or more phase encoders. Each phase encoder of the one or more phase encoders is configured to receive an optical signal from an optical signal generator that generated the optical signal, and generate, using a ring resonator having a resonant frequency, a phase-encoded signal by encoding auxiliary information into a phase of the optical signal.