Bidirectional Optical Communication System Using Wavelength-Selective Assemblies
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Solution Overview
Problem
Data centers face challenges in increasing data throughput without disrupting operations or incurring significant costs, as higher data rates lead to signal integrity issues and reduced link distances in existing optical communication systems, necessitating costly fiber additions or equipment upgrades.
Innovation Solution
A bidirectional optical communication system using complementary sub-assemblies with opto-electronic devices on planar substrates and optical assemblies that redirect optical signals, allowing for increased data rates without adding fibers or upgrading equipment, by configuring transceivers and optical assemblies to manage signals within the existing fiber infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data rate is increased in existing optical communication systems, then data throughput is improved, but signal integrity deteriorates and link distance decreases
Solution Approach 1:
The patent introduces bidirectional communication capability in the existing unidirectional fiber infrastructure by adding optical assemblies with wavelength-selective components at each end. This enables two-way communication over the same fiber without requiring additional fibers, effectively utilizing the existing infrastructure in a new dimensional configuration.
Solution Approach 2:
The system uses different wavelengths for transmitting and receiving signals in each direction (e.g., 850nm for forward, 905nm for reverse). This wavelength division multiplexing approach allows simultaneous bidirectional communication while maintaining signal integrity by separating the signal paths spectrally.
2Productivity
If data rate is increased in existing optical communication systems, then data throughput is improved, but link distance decreases
Solution Approach 1:
By using wavelength-division multiplexing with optimized wavelength pairs (such as 850nm and 905nm), the system maintains signal quality over longer distances at high data rates. Each wavelength can be optimized for specific transmission characteristics, allowing extended link distances while preserving high throughput.
3Productivity
If additional fiber is installed to increase data throughput, then data throughput is improved, but cost and operational disruption increase
Solution Approach 1:
The optical assemblies enable the existing single-mode or multi-mode fiber to function as a bidirectional communication channel. Instead of requiring separate fibers for each direction or additional capacity, the same physical infrastructure supports multiple communication paths through wavelength multiplexing, eliminating the need for costly fiber installation.
Solution Approach 2:
The patent creates functional copies of transmission capabilities in both directions using the same physical medium. By implementing complementary optical assemblies at each end with matching wavelength-selective components, the system replicates bidirectional communication functionality without duplicating the physical fiber infrastructure.
4Productivity
If existing equipment is upgraded to increase data throughput, then data throughput is improved, but cost and operational disruption increase
Solution Approach 1:
The optical assemblies are designed as cost-effective add-on components that can be installed on existing transceivers without replacing the entire equipment. These modular assemblies provide the bidirectional functionality at lower cost compared to upgrading core switching or transceiver equipment, minimizing both expense and operational disruption.
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 solution enables cost-effective and non-disruptive increases in data throughput by maintaining signal integrity over longer distances within existing fiber infrastructure, reducing the need for costly upgrades or fiber rerouting.
Implementation Method 1
an optical element that is substantially transparent to incident light having a first range of wavelengths and that redirects incident light having a second range of frequencies different from the first range of frequencies
Implementation Method 2
The second optical element is transparent to the first optical signal at the first wavelength
Implementation Method 3
an optical element that redirects both a transmitted optical signal and a received optical signal
Data Source
AI summary
A bidirectional optical communication system includes first and second transceivers arranged at opposed ends of an optical medium. Opto-electronic devices within the transceivers are arranged on respective mounting surfaces of planar substrates. First and second optical assemblies couple the respective transceivers to the optical medium. The optical assemblies include first and second optical elements arranged along an axis normal to the substrates. The first optical element is transparent to the optical signal transmitted from the respective transceiver and redirects the received optical signal from the other transceiver. The optical assemblies enable a single alignment of the opto-electronic devices and the optical medium.