Laser Optical Resonator Construction TRIZ Cases

Inverted input waveguides in an arrayed waveguide grating cancel wavelength-dependent loss, boosting output efficiency across the band.

Merges a germanium absorber and shallow trench isolation to reduce signal leakage and crosstalk in photonic devices.

An optical reflection reducing region absorbs leaked laser light to prevent heat damage to fixatives and improve module reliability.

A semiconductor laser source uses a Mach-Zehnder interferometer to filter optical wavelengths.

Output control unit selectively turns off outermost laser diodes to adjust power levels in wavelength beam combining devices.

Segmented burial using semi-insulating and resin layers prevents gaps between buried layers and end surfaces, ensuring high surface flatness.

An inverse taper on the top cladding reduces absorption loss and coupling mismatch between III-V semiconductor lasers and silicon photonic circuits.

Selective epitaxy replaces semiconductor material within photonic crystal structures to enable precise gain placement.

Optimized strip dimensions in the AlGaInN laser diode resolve contradictions between power and reliability while improving manufacturing yield.

Thermal feedback control aligns Vernier ring resonances to lock cavity modes, reducing bending loss and mode-hopping in hybrid lasers.

A polarization rotator mirror aligns light waves with a wavelength division multiplexing filter to maintain stable optical output.

Phase-shifted sampled Bragg gratings in a cascaded hybrid laser array enable tunable wavelength switching, overcoming phase errors and grating precision limits.

An extended cavity Fabry-Perot laser assembly provides narrow mode spacing and high-speed optical modulation.

Asymmetric refractive index regions in a photonic crystal layer stabilize polarization directions while enabling diverse laser beam pattern generation.

Segmented heat generator maintains temperature uniformity across multiple semiconductor lasers.

A tunable light source modulates the center wavenumber of an illumination beam to reduce peak-to-peak interference patterns in spectral imaging devices.

An external laser cavity with a wavelength selective reflector limits stimulated Brillouin scattering by constraining light roundtrip time.

Undulated electrodes on lithium niobate resonators achieve phase matching for tunable single sideband modulation across X to W bands.

A distributed feedback laser uses a periodic grating with a specific refractive index profile to generate selective radiative losses.

An arrayed waveguide grating filters light from laser emitters while an external reflector routes filtered light back to form a lasing cavity.

A regenerative amplifier stabilizes beam axis using a multipass optical path within a slab gain medium.

A transparent conductive film applies a molybdenum concentration gradient to resolve the trade-off between low contact resistance and high light transmittance.

A loss-modulated semiconductor laser device controls photon lifetime via doped regions in a silicon waveguide to enable high-speed optical signal modulation.

A two-dimensional photonic crystal surface emitting laser light source uses modified refractive index areas to prevent destructive interference.

Conductive pillars in multi-layered ceramic housing connect thermo-electric controller electrodes to electrical pads, reducing voltage drops and wiring area.

Rotating a wedge etalon adjusts cavity length and wavelength simultaneously, preventing mode hopping and intensity noise.

Segmenting the base region with quantum wells and applying AC modulation resolves the trade-off between high speed and low current gain in transistor lasers.

A hybrid integrated laser couples a semiconductor gain die to an optical waveguide chip featuring an arrayed waveguide grating for wavelength selection.

A polymer wavelength tunable laser maintains constant optical intensity in an optical time domain reflectometer.

A SOI VLSI structure replaces its semiconductor substrate with a high-resistivity upper layer to integrate photonic and electronic devices.

Nested resonant cavities and a three-bandwidth Pound-Drever-Hall stabilizer reduce phase noise without separate CW lasers or f-2f interferometers.

Underfill dams prevent flow into optical overhang areas, maintaining alignment precision while managing thermal loads.

A wavelength-tunable multiline ArF excimer laser apparatus uses optical switches to merge semiconductor laser beams into a wide effective spectral linewidth.

High strain InGaAs/AlInAs composition in quantum cascade lasers suppresses carrier leakage, improving wallplug efficiency at 293 K.

Reducing the underlying layer inclination angle resolves the contradiction between crystal growth orientation and photolithographic electrode formation.

A discrete wavelength tunable laser uses a demultiplexer and distributed Bragg reflectors to select spectral bands.

A carbon nanotube indium composite conducts heat from laser emitters while suppressing solder creep during thermal cycling.

A wavelength monitor circuit outputs four light components with 90-degree optical phase shifts for precise detection.

Optical switches reconfigure cavity length to tune comb spacing, resolving the trade-off between adaptability and device complexity.

A quantum cascade laser uses dynamic error signals to autonomously align its external optical cavity.

A quantum cascade laser uses a dielectric film to prevent short-circuiting between metal reflective films and semiconductor layers.

A tunable element aligns a laser-generated local oscillator signal with incoming data to suppress interference from other wavelengths.

A thermal emission source uses a two-dimensional photonic crystal to modulate light intensity via voltage-controlled quantum well energy levels.

Integrating pump mirrors with resonator optics reduces complexity while enhancing gain and heat distribution.

Segmented modules and optical reflectors resolve integration complexity while boosting data bandwidth and reducing power consumption.

Photonic crystal holes with four distinct {100} facets reduce dislocation density during regrowth, enhancing emission output and heat resistance.

Waveguide resonator elements enable dynamic polarization tuning without bulky external optics, reducing transmission loss and device size.

Relocates identifying marks to visible chip sides, resolving visibility loss after CAN packaging.

Varying quantum well thicknesses adjust charge carrier distribution to prevent emission spectrum broadening at elevated current densities.

Positioning a heater on the electro-absorption medium improves temperature control precision while reducing overall device complexity.