Bidirectional Microring Resonators for Higher-Bandwidth Optical Links
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Solution Overview
Problem
Conventional optical data links face challenges in increasing bandwidth while maintaining energy efficiency, as overemphasizing multiplexing mechanisms can lead to degraded energy efficiency and require complex circuit and algorithm implementations.
Innovation Solution
Implementing a bidirectional micro-ring resonator-based optical transceiver architecture that utilizes micro-ring resonators with two input and four output ports to multiplex two distinct data streams on the same optical wavelength or separated wavelengths, reducing power consumption by amortizing the tuning power across multiple data streams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional unidirectional micro-ring resonators are used to recover data over an optical bus, then data recovery is achieved, but bandwidth is limited and power consumption is high due to dedicated resonators per wavelength
Solution Approach 1:
The micro-ring resonator is designed with two input ports and two output ports, enabling it to handle multiple wavelengths and data directions simultaneously. A single resonator can recover data from multiple wavelengths through wavelength division multiplexing, eliminating the need for dedicated resonators for each wavelength and direction, thereby reducing power consumption while increasing bandwidth capacity
Solution Approach 2:
The patent combines bidirectional data transmission and multiple wavelength handling into a single micro-ring resonator structure. By merging the functions of multiple unidirectional resonators into one bidirectional resonator, the system achieves higher bandwidth utilization and reduces the total power required for data recovery across the optical bus
2Productivity
If multiple multiplexing mechanisms are applied together to increase bandwidth, then throughput scales higher, but energy efficiency degrades and circuit complexity increases
Solution Approach 1:
The bidirectional micro-ring resonator performs multiple functions simultaneously: it handles wavelength division multiplexing, supports bidirectional data transmission, and enables data recovery for multiple wavelengths through a single device. This multi-functionality reduces the need for separate circuit implementations for each multiplexing mechanism, thereby scaling throughput without proportionally increasing circuit complexity
3Productivity
If multiple multiplexing mechanisms are applied together to increase bandwidth, then throughput scales higher, but energy efficiency degrades
Solution Approach 1:
The patent merges multiple data streams across different wavelengths and directions into a single micro-ring resonator for recovery. By combining these streams and using a shared resonator instead of multiple dedicated resonators, the system achieves higher throughput while reducing the total energy consumption associated with operating multiple separate resonator circuits
Data Source
AI summary
Optical transceiver architecture utilizing micro-ring modulators and micro-ring resonators configured to route resonant wavelengths of light injected into each micro-ring resonator's input port and through port to that micro-ring resonator's drop port and add port, respectively. The micro-ring resonators drop two distinct streams of data modulated onto the same optical wavelength, or two wavelengths separated by an integer number of free spectral ranges coupled into the micro-ring resonators in two different directions.