Wavelength-Division Multiplex Systems TRIZ Cases

Reflective electro-absorption transceivers enable hierarchical optical distributed antenna architectures with single optical interfaces.

Incoherent laser merging generates multiple intensity levels for pulse amplitude modulation in optical links.

A single fiber combining module merges GPON, XGS PON, and DWDM wavelength channels onto one optical fiber using distinct spectral ranges.

Scrambling unwanted wavelengths prevents customer data breaches in shared submarine networks.

Redirecting attenuated C band optical signals as auxiliary pump sources reduces energy demand in L band EDFA systems.

Optical modules adjust transmission wavelengths based on control signals to resolve optical fiber waste and labor costs in 5G radio access networks.

Centralized wavelength assignment resolves single-wavelength limitations in conventional ONUs, allowing dynamic switching for improved operational flexibility.

A wavelength-multiplexed subranging electro-optic modulator folds large dynamic range input signals across multiple linear optical subranges.

A transmitter sets new power levels for optical multiplex signals using mean gain values and attenuations across amplification sections.

Input and output optical modulator arrays map local areas to increase switchable dimensions, resolving ROADM cross-connect limits.

Optical circulators separate downstream and upstream signals in coherent transceivers for full duplex transmission.

Cross-phase modulation converts pump intensity to probe phase, resolving high noise figures and insertion loss tradeoffs.

A multidirectional add device combines superchannel signals using an optical switching matrix and Wavelength Selective Switches.

A traffic management module processes data for transmission in electronic packet, optical burst, or optical circuit switching modes.

A phase modulator controller adjusts drive power to generate only necessary subcarriers in optical transmitters.

Shielding plates between collimator lenses prevent stray light crosstalk, ensuring accurate optical power monitoring across wavelength channels.

Optical identifier equipment assigns unique address codes to fiber segments, enabling precise fault location despite high splitting ratios.

An interleaver-based colorless add architecture separates odd and even wavelength channels using optical switches and couplers.

Merged wavelength division multiplexers and tap photodetectors reduce component count and signal loss during inline optical power measurement.

Ring resonator demultiplexers separate multi-wavelength signals into individual channels, resolving compatibility bottlenecks between CWDM and DWDM standards.

Adjustable guard-bands between eastbound and westbound channels increase channel density without complex fixed filters.

Dynamically deactivating idle lightpaths lowers heat dissipation while maintaining communication capacity.

Autonomous master controllers at cable stations detect local and remote alarms to execute distributed fault recovery actions.

A control device selects a monitoring wavelength path to measure signal quality and adjusts power of new paths in flexible grid optical networks.

A tunable optical filter adjusts bandwidth and wavelength within a receiver to support reconfigurable optical add or drop multiplexing.

A tunable optical filter isolates specific wavelengths from multiplexed signals, reducing the hardware complexity and cost of dedicated monitoring systems.

Tunable optical filter segments remove unwanted carriers through drop ports, enabling flex-grid monitoring without costly WSS integration.

A colorless tunable dispersion compensator uses a Bragg grating with thermal gradient tuning and mechanical strain shifting for independent wavelength control.

Cascaded two-mode Bragg gratings separate optical wavelengths to reduce laser temperature control requirements and power consumption.

Segmenting optical signals prevents false unplug detection by keeping reference group power above thresholds while tuning parameters.

A rotary multiplexer time division multiplexing circuit stores rotated data segments to reduce wiring complexity.

A method adjusts optical signal input power to measure bit error rate and estimate optical signal-to-noise ratio with high accuracy.

A remote node optical circuit switches between working and protection modes to maintain bidirectional communication channels.

Light reflection detection on unused ports prevents interference without adding encryption complexity.

An optical by-pass switch reconfigures fiber pairs to maintain full WDM signal loading during power interruptions.

Phase comparison drives a selector to choose amplifier outputs with adjusted timing, reducing crosstalk noise that degrades receiving signal quality.

A wavelength branching apparatus monitors uplink signals and outputs a dummy light beam to maintain optical power levels.

A 64B/66B encoder embeds OAM bits into FEC parity sync-header patterns to transmit control data alongside payload.

A control unit scrambles forwarded optical signals using dummy light generation, preventing unintended data extraction and maintaining secrecy.

Modulating data onto multiple optical carriers with vacant slots between them reduces spectrum fragmentation during cross transmission.

Monolithically integrated analog circuits monitor RF signals using peak or RMS detectors to adjust phases in modulators.

Automated ASE source adjustment maintains constant coupler output power, preventing channel corruption during WSS failures.

Planar assemblies route light between transceivers and fiber using passive filters and bulk lenses, managing wavelengths without complex alignment.

Spectral compression modulation separates downstream and upstream signals within distinct RF spectrum bands, reducing interference and component costs.

A wavelength reallocation assisting device outputs allocation state information to optimize resource usage in optical networks.

Pilot tone feedback tunes the mode multiplexer to reduce crosstalk from fabrication errors, lowering receiver power consumption.

Spectrum processing circuits modify dummy light profiles to distinguish them from signal light, ensuring power stability within submarine cable WDM signals.

Asymmetric waveguide core thicknesses in a thin film lithium niobate device prevent crosstalk while maintaining modulation efficiency.

A multi-channel coherent optical system distributes transmitted power across parallel paths using semiconductor optical amplifiers.