Wavelength-Division Multiplex Systems TRIZ Cases

Overlapping pass bands in multiple optical filters prevent cumulative band narrowing and signal trimming during long-distance transmission.

Integrated fastener positioning holes and filter grooves eliminate active adjustment complexity, improving assembly efficiency.

A thermal isolation bar electrically connects lasers to circuitry while thermally coupling them to a temperature control device.

A single fiber strand system directs Ethernet data flow onto new path adaptations using photonic-wave changes.

A multi-band hybrid wireless system transmits signals across regulated and unregulated frequency bands using low power distributed antennas.

Automated topology map updates via overhead channels prevent stale manual records and ensure accurate maintenance access.

Source optical devices transmit identification signals through WDM filters to remote passive nodes, enabling automatic connection mapping without local power.

Controller derives power profiles from received waveforms to estimate nonlinear signal-to-noise ratios, correcting uneven gain across C+L bands.

Matching arm lengths and materials compensate for thermal drift without control loops, ensuring wavelength stability in uncooled DWDM systems.

A graded waveguide optical coupler array transitions light between conventional fibers and multichannel waveguides using vanishing core structures.

A controller selects pre-calculated tilt and gain settings to correct amplifier parameters during fault events.

A joint optimization procedure reduces time complexity to polynomial input size for routing and wavelength assignment.

A first node determines adaptation modes for client signals to establish a forwarding adjacency label switched path connection.

Network elements detect sudden optical power drops and send notifications to locate impairments without expensive dedicated OTDR equipment.

An FM-PM discriminator with opposing slope portions separates optical carrier frequencies to reduce system complexity.

A clip-on coupler extracts optical signals from communication fibers without physical disconnection, enabling undetectable data traffic monitoring.

A WDM-device switches to a replacement port upon detecting a faulty optical port.

A power calculation apparatus determines equivalent wavelength signals to compute target transmit power.

Multiband delta-sigma digitization aggregates multiple radio access technologies using oversampling and noise shaping.

Inserting zero-power gaps into transmission signals allows digital signal processors to calculate multipath interference strength without additional hardware.

A network compute load balancing method maps virtual links over physical links to optimize spectral efficiency in software-defined flexible-grid optical transport networks.

A configurable frequency domain equalizer processes multiple optical sub-carriers to recover high-rate data signals.

An optical network controller sets consecutive wavelength regions for active and standby paths to instruct nodes on central wavelengths.

Bypassing the isolator and erbium-doped fiber prevents amplified spontaneous emission noise, enabling low-cost fault detection across long submarine cables.

An optical interconnection device converts upstream and downstream signals between black-and-white client terminals and wavelength division multiplexing grids.

A bidirectional optical module uses a periodical filter to pair eastbound and westbound channels on a single fiber.

Detects main signal wavelengths and shifts dummy light bands to avoid interference, enabling flexible multi-vendor transmitter integration.

A temperature hardened passive dense wave division multiplexing add-drop multiplexer expands bandwidth in existing fiber ring infrastructures.

Band filters and a switching module route aggregated signals in a network node, reducing active components at remote sites.

Computes effective optical signal-to-noise ratio for each link element using segmented processing and lookup tables.

A variable equalizer analyzes amplified optical signals and applies dynamic loss profiles via a wavelength selective switch to flatten the spectrum.

Optical nodes store topology data to identify sections where 3R relay is unnecessary, reducing repeater costs.

A transmitter allocates optical power across multiple wavelength channels to transmit data using discrete multi-tone signals.

Remote control of chirped pulse spectra compensates for path-specific dispersion penalties, reducing bit errors during network reconfiguration.

Segmenting alarm data by wavelength prevents cross-user notification leakage and reduces management complexity in shared optical fiber networks.

Optical mirrors redirect data signals to idle ports, reducing latency and congestion by reallocating bandwidth resources dynamically.

A hierarchical access identifier model segments entity type and relationship data to streamline network element management.

Optical network units use band filters to separate downstream and direct star link signals, reducing attenuation from splitter devices.

Optical transport system uses pilot-symbol blocks with cyclic prefixes for synchronization, reducing bit-error rates caused by chromatic dispersion.

An optical relay system combines multi-band RF signals using a unified filter unit to enable efficient transmission.

Integrating an isolator core with a collimator blocks reflected light beams, resolving channel isolation and footprint trade-offs in multiplexer designs.

A repeater controller adjusts pump light power based on wavelength information to maintain peak power for optical signals.

Direct TOSA alignment eliminates insertion loss and polarization dependent loss, enabling compact high-speed optical transceivers.

A tunable dispersion compensator calculates a setpoint trajectory to adjust optical group delay, maintaining continuous channel performance during tuning.

Amplifiers boost seed signals across waveguides, shifting power efficiency from light sources to reduce WDM silicon-photonic link costs.

An arrayed waveguide grating performs simultaneous multiplexing and de-multiplexing of distinct optical bands.

Continuous parameter optimization resolves binary structure limits, achieving 89% transmission efficiency across a 500 nm bandwidth.

Ground-based optical gateways perform digital signal processing to eliminate complex onboard channelizers and reduce satellite mass.