Coherent Optical Breakout Using Single Laser
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Solution Overview
Problem
Current coherent optical communication systems are cost-prohibitive and power-intensive due to the requirement of frequency lockers and multiple lasers, making them impractical for data center applications, especially in short-distance connections where dispersion penalties are significant.
Innovation Solution
A coherent optical breakout system that uses a single laser with a novel frequency control algorithm, eliminating the need for frequency lockers and reducing laser count, and employs a grey laser with fixed wavelength for cost-effective and low-power coherent-lite receivers, enabling efficient communication across multiple parallel fibers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency lockers and multiple lasers are used in coherent optical communication systems, then communication reliability is improved, but system cost and power consumption increase significantly
Solution Approach 1:
The patent extracts and eliminates the frequency locker component from the coherent optical communication system. By using a single laser without a frequency locker, the system achieves cost reduction and simplified architecture while maintaining acceptable communication performance through alternative frequency management approaches
Solution Approach 2:
The patent merges the functions of multiple lasers into a single laser source. Instead of using separate lasers for different wavelengths, the system employs one laser that can operate at a fixed wavelength, combining the roles of multiple components into a single integrated solution that reduces complexity and power consumption
2Adaptability or versatility
If multiple lasers are used to support multiple wavelengths, then communication versatility is improved, but power consumption and cost increase
Solution Approach 1:
The patent implements universality by designing a single laser source that serves multiple communication channels. The fixed-wavelength laser provides multi-functional capability by supporting various modulation formats (QPSK, 16QAM, 64QAM) and data rates, eliminating the need for multiple specialized laser sources while reducing overall power consumption
3Productivity
If coherent optical communication is implemented in data centers, then bandwidth capacity is improved, but dispersion penalties become significant in short-distance connections
Solution Approach 1:
The patent applies parameter changes by transitioning from multi-wavelength operation to fixed-wavelength operation. This parameter change optimizes the system for short-distance data center applications by eliminating dispersion-related issues associated with wavelength multiplication, while maintaining high bandwidth capacity through advanced modulation techniques
Data Source
AI summary
A method, system, and apparatus for a coherent optical breakout; wherein the optical breakout has a laser; wherein the coherent optical breakout has a set of optical connections; wherein the set has at least two optical connections; wherein the coherent optical breakout enables coherent optical communication of X Gbs across each of the set of optical connections.