Optical Communication Device Automatic Wavelength Setting
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Solution Overview
Problem
In passive optical networks, manually setting wavelengths for communication between optical line terminals and optical network units is cumbersome and time-consuming, requiring administrator visits over long distances.
Innovation Solution
An optical communication device with a downstream wavelength analyzer and controller that automatically recognizes and sets wavelengths for communication channels using multiplexers and wavelength selective switches, eliminating the need for manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual wavelength setting is used between OLT and ONT/ONU, then communication channel connection can be established, but administrator visit is required which is time-consuming and cumbersome
Solution Approach 1:
The optical communication device automatically performs wavelength setting by analyzing transmission light to recognize downstream wavelengths and generating control signals to configure multiplexer ports, eliminating the need for administrator intervention and site visits
Solution Approach 2:
The device analyzes transmission light from the optical cable to obtain downstream wavelength information, uses this feedback to automatically configure the multiplexer settings, and establishes the communication channel based on the detected wavelength parameters
2Extent of automation
If automatic wavelength setting is implemented, then administrator visit is eliminated, but device complexity increases due to wavelength analyzer and controller
Solution Approach 1:
The controller performs multiple functions including generating control signals for multiplexer configuration, analyzing wavelength information from transmission light, and managing communication channel establishment, consolidating these functions into a single integrated component
Solution Approach 2:
The downstream wavelength analyzer acts as an intermediary that extracts wavelength information from the transmission light signal itself, using the existing optical signal to configure the system without requiring additional complex measurement equipment
Data Source
AI summary
An optical communication device includes: a first multiplexer including a first transmitting port and a second transmitting port; a downstream wavelength analyzer configured to analyze first transmission light to recognize a first downstream wavelength corresponding to the first transmission light and analyze second transmission light to recognize a second downstream wavelength corresponding to the second transmission light; and a controller configured to generate a first control signal for allowing the first transmitting port to pass light corresponding to the first downstream wavelength and allowing the second transmitting port to pass light corresponding to the second downstream wavelength, and output the first control signal to the first multiplexer, wherein the first multiplexer, according to the first control signal, controls the first transmitting port to correspond to the first downstream wavelength and controls the second transmitting port to correspond to the second downstream wavelength.