Auto-Tunable Optical Transceivers for Zero-Touch Wavelength Lock

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Solution Overview

Problem

Fixed and manually tunable optical transceivers require multiple variants for different wavelengths, leading to inventory management issues and costly truck rolls due to poor information flow and labeling, and are unable to dynamically adapt to changes in WDM filtering design.

Innovation Solution

Auto-tunable optical transceivers that can dynamically discover their local operating channel by communicating with a remote transceiver, allowing for plug-and-play deployment and eliminating the need for manual coding and truck rolls, with loss-of-signal triggering auto-tuning and storing last tuned-channel information for quick link recovery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If fixed wavelength transceivers are used, then cost and power efficiency are improved, but device complexity and inventory management burden increase due to requiring 40 different transceiver variants for each wavelength channel

Engineering Contradiction:

Improvepower efficiencyVSAvoidtransceiver variant complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The transceiver is designed with universal wavelength tuning capability, allowing a single transceiver model to operate across multiple wavelength channels (e.g., all 40 DWDM channels). This is achieved through tunable laser sources and wavelength-selective components that can be programmed to different channels, eliminating the need for 40 separate fixed-wavelength transceiver variants while maintaining cost and power efficiency benefits

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Device complexity

If manually tunable transceivers are used, then transceiver variant complexity is reduced, but deployment time and error rate increase due to requiring manual on-site coding and configuration

Engineering Contradiction:

Improvetransceiver variant complexityVSAvoiddeployment time

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The transceiver incorporates self-configuration capabilities through automatic wavelength detection and peer-to-peer negotiation protocols. When deployed, the transceiver automatically detects the WDM filter port wavelength, communicates with the remote transceiver to establish mutual channel identification, and configures itself without manual intervention. This eliminates the need for manual on-site coding while reducing deployment time and errors

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The transceiver implements feedback mechanisms where wavelength detection results and peer transceiver responses are used to automatically adjust configuration parameters. The system continuously monitors the optical link status and adjusts its operating wavelength based on feedback from the remote end, enabling autonomous deployment and adaptation

Inventive Principle:

Principle #23Feedback

3Device complexity

If manually coded transceivers are used, then transceiver variant complexity is reduced, but adaptability to WDM filter changes is worsened due to requiring truck rolls for any wavelength reallocation

Engineering Contradiction:

Improvetransceiver variant complexityVSAvoidadaptability to WDM filter changes

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The transceiver employs dynamic wavelength tuning capabilities that allow real-time adaptation to changing WDM filter configurations. The system can programmatically switch between different wavelength channels based on network requirements, filter port allocations, or traffic demands. This dynamic adaptability eliminates the need for physical truck rolls when wavelength reallocation is needed, as the transceiver can be remotely reconfigured to match new WDM filter port assignments

Inventive Principle:

Principle #15Dynamics

4Manufacturing precision

If fixed wavelength transceivers are used, then manufacturing precision is improved, but adaptability to different wavelength channels is reduced

Engineering Contradiction:

Improvewavelength precisionVSAvoidwavelength channel adaptability

Core Design Contradiction:

Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The transceiver utilizes controllable parameter changes in its laser source wavelength through temperature tuning and current modulation. By dynamically adjusting these parameters, the transceiver can precisely tune its operating wavelength across multiple DWDM or CWDM channels while maintaining the spectral precision required for wavelength-division multiplexing. This allows a single device to achieve both manufacturing precision and wavelength adaptability

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20260039386A1Auto-tunable optical transceivers

Publication Date: 2026.02.05 CHARTER COMM OPERATING LLC

AI summary

A (first) auto-tunable, optical transceiver that transmits outgoing Channel Information Messages (CIMs) using a plurality of local channels, each outgoing CIM message identifying (i) the local channel used to transmit the outgoing CIM message and (i) a remote-channel value usable to identify a remote channel used by a (second) auto-tunable, optical transceiver to transmit a CIM message to the first transceiver over an optical link, until the first transceiver receives an incoming CIM message from the second transceiver that indicates that the second transceiver received an outgoing CIM message from the first transceiver in a target local channel. The first transceiver can then transmit data to the second transceiver using the target local channel. The second transceiver operates likewise, thereby enabling the first and second transceivers to auto-tune to appropriate target channels without requiring manual intervention.