Single-Optical-Fiber Bidirectional Transceiver Using Time-Division Multiplexing
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Solution Overview
Problem
The increasing demand for optical transceiver modules in data communication systems leads to a rapid increase in the use of multiple optical fibers, resulting in higher material and management costs for data centers.
Innovation Solution
A single-optical-fiber bidirectional transceiving device is developed, which integrates an optical input port, an optical output port, a composite optical transmission port, a bidirectional optical transmission assembly, and an optical guide assembly. This device uses a compact integrated chip with multiplexing and demultiplexing functions to transmit both emitting and receiving signals through a single optical fiber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple optical fibers are used to transmit both emitting and receiving signals, then the communication reliability is improved, but the material cost and optical fiber management cost increase
Solution Approach 1:
The patent segments the optical signal transmission by separating emitting signals and receiving signals in the time domain using time-division multiplexing. The bidirectional optical transmission assembly transmits signals in alternating time slots, allowing a single optical fiber to carry both types of signals without interference, thus reducing optical fiber quantity while maintaining communication reliability
Solution Approach 2:
The single optical fiber is designed to perform multiple functions: it can transmit both emitting signals and receiving signals by time-division multiplexing, and the bidirectional optical transmission assembly can operate in both transmission and reception modes. This multi-functionality eliminates the need for separate optical fibers for each direction, reducing overall optical fiber usage while maintaining reliable communication
2Quantity of substance
If a single optical fiber is used for bidirectional transmission, then the material cost and management cost are reduced, but the device complexity increases
Solution Approach 1:
The patent merges the emitting signal transmission and receiving signal transmission functions into a single optical fiber by introducing the bidirectional optical transmission assembly. This assembly combines time-division multiplexing and optical path switching capabilities, allowing one optical fiber to replace what would traditionally require two separate fibers, thus reducing material costs while managing device complexity through integrated design
Solution Approach 2:
The bidirectional optical transmission assembly employs dynamic time-division multiplexing to switch between transmitting emitting signals and receiving receiving signals on the same optical fiber. This dynamic switching capability allows the system to adaptively allocate the single optical fiber for different communication directions, reducing the need for multiple static optical fibers and simplifying the overall device structure
3Productivity
If traditional optical transceiver modules are used, then the communication function is achieved, but the optical fiber management cost increases
Solution Approach 1:
The single optical fiber in this patent is designed to perform multiple functions including both emitting and receiving signal transmission through time-division multiplexing. This universal design eliminates the need for separate optical fibers for each direction, significantly reducing the number of optical fibers that need to be managed, installed, and maintained, thereby improving ease of operation while maintaining high communication efficiency
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 device achieves a compact and stable structure, reducing the overall size and increasing the reliability of the bidirectional optical transceiving function. It decreases the usage of optical fibers and lowers maintenance costs, while maintaining high communication rates.
Implementation Method 1
the beam combining waveguide structure has an input end facing the plurality of optical input ports and an output end facing the bidirectional optical transmission assembly, and is configured to combine a plurality of emitting signals incident by the plurality of optical input ports and transmit the emitting signals being combined to the bidirectional optical transmission assembly
Implementation Method 2
the beam splitting waveguide structure has an input end facing the bidirectional optical transmission assembly and an output end facing a plurality of optical input ports, and is configured to divide the receiving signal output by the bidirectional optical transmission assembly into a plurality of light-splitting receiving signals respectively corresponding to the plurality of parallel optical output ports
Implementation Method 3
the bidirectional optical transmission assembly is configured to transmit the receiving signal input from the composite optical transmission port to the optical guide assembly, and transmit the emitting signal output from the optical guide assembly to the composite optical transmission port
Data Source
AI summary
Disclosed are a single-optical-fiber bidirectional transceiving device and an optical fiber communication system. The device comprises a composite optical transmission port being coupled with an optical fiber; an optical input port for outputting an inputted emitting signal to the composite optical transmission port; an optical output port for outputting a receiving signal input from the composite optical transmission port; an bidirectional optical transmission assembly for transmitting the receiving signal input from the composite optical transmission port to an optical guide assembly and an emitting signal output from the optical guide assembly to the composite optical transmission port; and the optical guide assembly for transmitting the emitting signal input from the optical input port to the bidirectional optical transmission assembly and a receiving signal output from the bidirectional optical transmission assembly to the optical output port, whereby a bidirectional optical transceiving function can be realized through a single optical fiber.