Central Node Optical Signal Stabilization for Distributed Networks
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Solution Overview
Problem
The high cost and complexity of stabilizing laser signals for Rydberg-atom based technologies, such as atomic radio detectors and atomic clocks, make mass deployment in telecommunications networks prohibitively expensive due to the need for dedicated equipment at each device.
Innovation Solution
A method is introduced where a central node in a telecommunications network produces and stabilizes optical signals at a lower transmission loss wavelength, which are then distributed to multiple nodes, reducing the need for local stabilization equipment by using wavelength converters and optical stabilizers in the central node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If saturation absorption spectroscopy technique is used to stabilize laser signal at each device, then laser signal stability is improved, but device cost and complexity increase prohibitively
Solution Approach 1:
The patent extracts the laser stabilization function from individual distributed nodes and relocates it to a central node. The central node generates and stabilizes the master laser signal, then distributes the stabilized signal to multiple nodes via optical network, eliminating the need for stabilization equipment at each distributed node.
Solution Approach 2:
The patent merges multiple laser stabilization functions into a single central stabilization system. Instead of each distributed node having its own stabilization equipment, one central stabilizer serves all nodes, reducing overall system complexity and cost while maintaining signal stability.
2Reliability
If first wavelength (780 nm) is used for Rydberg-atom based technologies, then laser signal stability is achieved, but transmission loss increases
Solution Approach 1:
The patent changes the transmission wavelength parameter from 780 nm to a longer wavelength (1260-1625 nm) for the distribution optical network. This parameter change reduces transmission loss in the optical fibers while the central node maintains signal stability through stabilization before distribution.
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 approach reduces the number of stabilizers required and minimizes transmission loss, enabling efficient and cost-effective distribution of stable laser signals to multiple devices, facilitating the mass deployment of Rydberg-atom based technologies in telecommunications networks.
Implementation Method 1
the first path for the first optical signal is connected to a first optical stabilizer to stabilize the first optical signal produced by the central node
Implementation Method 2
The first path for the first optical signal may include a first wavelength converter to convert the first optical signal from the second wavelength to the first wavelength before stabilization by the optical stabilizer
Data Source
AI summary
This disclosure provides a method of operating a central node in a telecommunications network, the telecommunications network including an optical network and a plurality of distributed nodes each configured to use a first optical signal at a first wavelength, the method including producing a first optical signal at a second wavelength; directing the first optical signal into a first path for the first optical signal and a second path for the first optical signal, wherein the first path for the first optical signal is connected to a first optical stabilizer to stabilize the first optical signal produced by the central node, and the second path for the first optical signal provides the first optical signal to the optical network for distribution to each of the plurality of distributed nodes, wherein the second wavelength has a lower transmission loss than the first wavelength.