Optical Module Data Processor for High-Speed Signal Decoding
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Solution Overview
Problem
Current optical modules face challenges in matching high-speed electrical signal transmission rates with the bandwidth limitations of light emitting chips, particularly at transmission rates of 1.6 Tb/s or 3.2 Tb/s, where the electrical port rate exceeds the optical port rate, necessitating a solution to drive VCSELs efficiently while maintaining low power consumption and cost.
Innovation Solution
The optical module incorporates a data processor with a reverse gearbox to decode high-speed electrical signals into multiple low-speed channels, and a gearbox to encode low-speed electrical signals into high-speed signals, allowing the VCSEL to operate within its bandwidth limits, and utilizes a light transmit-receive device with a wavelength division multiplexer to share optical fibers, reducing fiber count and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the electrical port rate is increased to achieve high transmission rates (1.6 Tb/s or 3.2 Tb/s), then the transmission speed is improved, but the bandwidth of light emitting chips becomes insufficient to support the electrical port rate
Solution Approach 1:
The patent divides a single high-speed electrical channel into multiple lower-speed electrical channels using a reverse gearbox. Specifically, one high-speed electrical channel is segmented into multiple parallel lower-speed channels that can be supported by the bandwidth limitations of VCSELs, thereby resolving the bandwidth mismatch while maintaining high aggregate transmission rates
Solution Approach 2:
The patent transitions from a single-channel high-speed electrical interface to a multi-channel parallel architecture. By adding the dimension of channel multiplicity and using wavelength division multiplexing, the system achieves high transmission rates through parallel processing rather than relying on a single high-bandwidth channel
2Productivity
If multiple optical fibers are used to support high transmission rates, then the transmission capacity is improved, but the cost and device complexity increase
Solution Approach 1:
The patent merges multiple optical channels into a single optical fiber using wavelength division multiplexing. Different wavelengths are multiplexed together and transmitted through the same fiber, thereby achieving high transmission capacity without increasing the number of optical fibers required
Solution Approach 2:
The wavelength division multiplexer enables a single optical fiber to carry multiple wavelength channels simultaneously, making the fiber serve multiple transmission functions at once. This multi-functional approach increases transmission capacity while reducing the number of fibers needed
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 configuration enables efficient operation of optical modules at high transmission rates with reduced power consumption and lower costs, achieving reliable, high-reliability, and cost-effective short-distance optical communication.
Implementation Method 1
The light emitting device is disposed on the circuit board and is configured to emit a plurality of channels of first optical signals
Implementation Method 2
The light receiving device is disposed on the circuit board, and is configured to receive a plurality of channels of second optical signals from an outside of the optical module, and convert the plurality of channels of second optical signals into a plurality of channels of electrical signals
Data Source
AI summary
An optical module includes a circuit board, a light emitting device and a data processor. The data processor is disposed on the circuit board. The data processor includes a reverse gearbox and a gearbox. The reverse gearbox is connected to the light emitting device, and is configured to receive a high-speed electrical signal from the circuit board, and decode the high-speed electrical signal into a plurality of channels of low-speed electrical signals. The plurality of channels of low-speed electrical signals drive the light emitting device to emit the plurality of channels of optical signals. The gearbox is connected to the light receiving device, and is configured to receive a plurality of channels of low-speed electrical signals output by the light receiving device, encode the plurality of channels of low-speed electrical signals into a high-speed electrical signal, and transmit the high-speed electrical signal to the circuit board.