Optical Measurements TRIZ Cases

Beam steering and real-time wavelength measurement let a PIC optical transmitter cut speckle noise and improve tissue spectroscopy accuracy.

Two spectrometers with different free spectral ranges enable precise pulse-laser wavelength control to reduce chromatic aberrations in lithography.

A sinusoidal diffraction grating suppresses higher order diffracted light, enabling more accurate wavefront measurement of projection optics.

Two frequency-shifting optical cavities replace scanning and heavy DSP to measure wideband signal cross-correlation in real time.

A coupled optical fiber region separates light by wavelength, enabling accurate wavelength detection for complex spectra without a spectrometer.

Interference-based optical references track wavelength drift without temperature sensors, enabling compact silicon photonics frequency control.

Electrostatic MEMS micro-mirror arrays replace slow piezo mirrors to correct laser beam profiles, steer amplified beams, and compensate atmospheric distortion.

A spectrometer-based waveform metric evaluates full excimer laser spectra, helping stabilize exposure imaging beyond line-width control.

Phase correction at the laser source and reflected signal reduces phase wandering, extending lidar coherence length, range, and vibration sensitivity.

A double-slit sensor uses laser coherence and interference patterns to separate laser direction signals from ambient light for faster alignment.

An interferometer and vector-based synthesizer enable precise on-chip tunable laser locking across broad wavelengths with fewer photodiodes.

An interferometer and vector synthesis enable on-chip tunable laser locking with high wavelength accuracy, fewer photodiodes, and broad flexibility.

Interferometer feedback adjusts laser diode current to stabilize emission wavelength during modulation and temperature drift in LiDAR.

Diffraction gratings and an image sensor identify laser wavelength and direction in a compact lensless format suited to wearable threat detection.

Phase correction at the laser source and return signal suppresses phase wandering, extending lidar coherence length and vibration accuracy.

A planar lightwave circuit multiplexes different source wavelengths through shared filters and detectors to cut size and manufacturing cost.

A PIC wavemeter tracks effective interferometric wavelength drift in fiber optic gyros, enabling scale factor correction under aging and harsh environments.

Two frequency-shifting optical cavities replace scanning delay lines and heavy DSP to measure wideband signal cross-correlation in real time.

A Mach-Zehnder interferometer with log-ratio and buffer amplification linearizes laser frequency measurement for fast, high-resolution response.

Birefringent windows and half-waveplates detect phase errors in co-propagating beams, simplifying alignment and stabilizing CBC output.

A dual-mode laser with a phase reference path measures terahertz signal shifts accurately, supporting stable high-speed wireless links.

Optical fiber links let a master comb unit calibrate remote light sources accurately while cutting transport delays, downtime, and labor.

Sigmoid time-domain modeling replaces cumbersome numerical linewidth analysis and captures natural and technical broadening in single-frequency lasers.

Power measurements at spaced interference points reveal beam phase differences, enabling single-step wavefront control in combined beams.

Zernike sensitivity matching helps smaller metrology targets track tilted device placement more accurately and reduce bias from optical aberrations.

Vertical silicon-germanium sensing layers and backside microstructures improve multi-wavelength channel alignment and image recognition accuracy.

A single interferometer locks and monitors multiple light sources in parallel, cutting locker optics complexity and cost.

A pigment-coated filter selectively absorbs 380-500 nm LED light to reduce retinal exposure, eye strain, and visual discomfort.

Multiple waveguide output signals separate temperature and wavelength shifts from power variation and stress, improving optical measurement accuracy.

Matching metrology target Zernike sensitivity to tilted device features cuts pattern placement errors and improves semiconductor measurement accuracy.

Beat-frequency detection with an optical frequency comb extends wavelength measurement beyond photonic detector bandwidth limits.

A yellow pigment filter selectively absorbs 380-500 nm LED light to protect retinal cells while preserving visual comfort and reducing eyestrain.

A π/2 spectral phase scan measures and corrects ultrafast pulse distortions with self-referenced precision beyond conventional FROG and SPIDER.

A pigment-coated blocking element selectively absorbs 380-500 nm LED light to protect the retina and cornea while preserving display visibility.

Dual-output optical waveguides separate temperature and wavelength effects from power variation, enabling more accurate calibrated sensing.

Source-side and reflected-signal phase correction suppress phase wandering in tunable lidar, extending coherence length and vibration accuracy.

Dual output ports with different transfer functions separate temperature and wavelength effects, improving optical waveguide sensing accuracy.

Using transparent materials with different thermal sensitivities, this case stabilizes optical path difference without active temperature control.

Internal beam sampling measures phase differences inside the combiner, enabling drift-tolerant coherent optical phased array locking without external sensors.

Precomputed deconvolution kernels let exposure lasers calculate each pulse spectrum faster while preserving chromatic aberration control.

An integrated binary lens in the passivation layer focuses light directly onto photodiodes, reducing pixel crosstalk in wavefront sensing.

Multiple temperature sensors map non-uniform heating in an integrated wavemeter, enabling more accurate tunable laser calibration and stable wavelength control.

Splitting one photon beam into depth-tuned component beams enables parallel 3D focusing with consistent optical quality across materials.

Interference fringe analysis enables accurate tool-to-surface distance measurement over a wide range, even under sub-sampling distortion.

Low-coherence interferometry measures tool-to-surface distance accurately despite material shape, non-metal surfaces, and sub-sampling distortion.

Random scattering patterns enable single-shot phase and amplitude recovery with higher signal-to-noise and lower invasiveness to the imaging object.

Synchronous phase and polarization modulation with balanced photodetectors boosts CPT contrast and suppresses common-mode noise in compact atomic clocks.

Phase-modulated bichromatic light generates CPT error signals without high microwave resolution, improving atomic clock stability and SNR.

Random spatial frequency radiation and sparsity-based reconstruction recover phase and amplitude with higher SNR and lower imaging invasiveness.

Random spatial-frequency illumination and sparsity-based reconstruction recover phase and amplitude with higher SNR and lower imaging invasiveness.

Carbon nanotube light absorption replaces complex spectrometers to identify specific wavelengths for low-cost, reliable locking control.

A tapered optical fiber generates an evanescent field to detect individual nanoparticles without labels.

Asymmetric mesa etching deposits Si-based compound materials on waveguide and photodiode structures, reducing crosstalk between sections.