Centralized CPO Light Supply Pool for Panel Space and Backup Switching
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Solution Overview
Problem
Existing co-packaged optics (CPO) light sources face issues with high technical difficulty in silicon-based integration, increased power consumption due to high ambient temperature, decreased luminous efficiency, and failure rates, especially with panel pluggable light sources occupying the front panel and being independent, leading to reliability concerns.
Innovation Solution
A centralized light supply apparatus with a controller, light source pool, and CPO switches connected via a two-way communication channel and photoelectric hybrid connector, featuring a 16+2 backup configuration for light sources, including normal, hot, and cold backups, with optical cross matrices and controllable optical switches for switching and fault detection, enabling centralized management and automatic backup switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an ELS panel pluggable light source is used, then the light source can be independently managed and replaced, but it occupies valuable front panel space
Solution Approach 1:
The light sources are extracted from individual CPO switch modules and centralized into a shared light source pool. This allows the front panel to be freed from multiple light source components while maintaining independent management capabilities through the controller that manages the centralized pool.
Solution Approach 2:
A single centralized light source pool serves multiple CPO switches, making the light source system universal. The same pool of light sources can be dynamically allocated to different switches based on demand, replacing the need for dedicated light sources at each switch location.
2Ease of repair
If each pluggable light source is independent, then it can be individually replaced, but reliability is compromised due to lack of shared backup resources
Solution Approach 1:
Multiple light sources including backup sources are merged into a single centralized pool. This allows backup light sources to serve multiple switches simultaneously, improving reliability through shared redundancy while maintaining the ability to individually replace failed sources through the controller's management.
Solution Approach 2:
The system dynamically changes the operational state of light sources in the pool, switching between normal operation, backup standby, and failure replacement modes. This allows the same physical light sources to fulfill multiple functional roles, enhancing reliability without requiring separate dedicated backups for each switch.
3Loss of energy
If a built-in light source is used in CPO, then coupling loss is reduced and efficiency is improved, but the high ambient temperature near the switch chip increases power consumption and failure rate
Solution Approach 1:
A photoelectric hybrid connector serves as an intermediary between the centralized light source pool and CPO switches. This connector enables efficient optical coupling with minimal loss while physically separating the light sources from the hot switch chip environment, allowing light sources to operate in a cooler, more stable temperature zone.
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
The solution provides reliable, high-density light supply with reduced panel space occupation, automatic fault detection and switching, and zero failure rates, supporting scalable and expandable light source management for data centers and routers.
Implementation Method 1
the optical cross matrix is respectively connected with the plurality of light sources and the plurality of CPO switches through optical fibers
Implementation Method 2
The plurality of CPO switches are configured to modulate the received light source into an optical signal under control of the controller
Data Source
AI summary
Embodiments of the present disclosure provide a centralized light supply apparatus, including: a controller, at least one light source pool, and a plurality of CPO switches. The controller is connected with the light source pool and the plurality of CPO switches through a two-way communication channel, and the light source pool is connected with the plurality of CPO switches through a photoelectric hybrid connector. The controller is configured to control the light source pool and the plurality of CPO switches. The light source pool is configured to output a light source to the plurality of CPO switches under control of the controller. The plurality of CPO switches are configured to modulate the received light source into an optical signal under control of the controller and output the optical signal. The light source pool may be cascaded and expanded through one controller. The problems that in the related art, an ELS panel pluggable light source occupies a front panel of a device and occupies a large space can be solved. Through the photoelectric hybrid connector, more light sources can be connected and occupy small space on the panel, and the space occupied by the panel is greatly reduced.