164880 ⎘
Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using other arrangements than interferometer arrangements Sensor working in reflection
Sub-classes:OPTICAL MEASUREMENT SYSTEM
#2SENSOR FOR FIBER OPTIC CLOSURES
#3INTEGRATED SYSTEM FOR OPTICAL FIBER SENSING AND COMMUNICATION THROUGH SHARING CO-FREQUENCY RESOURCES
#4DISTRIBUTED ACOUSTIC SENSING (DAS) SYSTEM FOR ACOUSTIC EVENT DETECTION BASED UPON COVARIANCE MATRICES AND RELATED METHODS
#5DETECTION SYSTEM, DETECTION DEVICE, AND DETECTION METHOD
#6Dynamic anomaly localization of utility pole wires
#7OPTICAL FIBER SENSOR AND DETECTION METHOD
#8Inductive position sensors
#9Optical fibre based measurement method of measuring parameters, and computer program product
#10Optical sensing system
#11Dynamic anomaly localization of utility pole wires
#12Surveying system and surveying method
#13Very large scale integration for fibers (VLSI-Fi)
#14Method and apparatus for optical sensing
#15Apparatus for monitoring a measurand
#16In situ and real time quality control in additive manufacturing process
#17Metal-embedded optical fibers for monitoring pressure or corrosion at high temperatures
#18Temperature measuring device using optical fiber Bragg grating sensor
#19Method and apparatus for suppression of noise due to transmitted signal instability in a coherent fiber optical sensor system
#20Reflective long period grating
#21Optical fiber based organic cantilever with integrated transduction
#22Signal to noise ratio management
#23In situ and real time quality control in additive manufacturing process
#24Method and apparatus for optical sensing
#25Distributed sensing systems and methods with spatial location correlation
#26Encoder scale, manufacturing method for encoder scale, and encoder
#27Wavelength determination using an optical filter having complementary transmission and reflection coefficients
#28Dissimilar cores in multicore optical fiber for strain and temperature separation
#29Range extension for optical fiber sensing systems
#30Fiber optic personnel safety systems and methods of using the same
#31Time division multiplexing (TDM) and wavelength division multiplexing (WDM) fast-sweep interrogator
#32System and method for measuring liquid levels having a fiber with a strain layer around a Bragg grating
#33METHOD AND APPARATUS FOR MEASURING PHYSICAL QUANTITY BASED ON TIME AND WAVELENGTH DIVISION MULTIPLEXING (TWDM)
#34Force and momement balance and support therefor
#35MEASUREMENT PROBE AND OPTICAL MEASUREMENT SYSTEM
#36Optical couplers used in a downhole splitter assembly
#37Methods and apparatus segmented calibration of a sensing optical fiber
#38Optical waveguide system for interrogating a plurality of sensor nodes wherein a location of the received input signal is determined
#39TETHERED SENSING SYSTEM FOR PIPELINES
#40Method and apparatus for measuring operational gas turbine engine housing displacement and temperature by a distributed fiber optic sensing system utilizing optical frequency domain reflectometry
#41Apparatus for measuring optical signals from multiple optical fiber sensors
#42Fiber optic personnel safety systems and methods of using the same
#43Light guide sensor, and method of forming light guide sensor
#44Time delay compensation for optical waveguides using a bidirectional wavelength scan
#45Time division multiplexing (TDM) and wavelength division multiplexing (WDM) fast-sweep interrogator
#46Optical couplers used in a downhole splitter assembly
#47Fiber-optic sensor device having a second fiber bragg grating unit to reflect light passing through a fiber optic sensor
#48Long-distance polarization and phase-sensitive optical time-domain reflectometry based on random laser amplification
#49Distributed disturbance sensing device and the related demodulation method based on polarization sensitive optical frequency domain reflectometry
#50Polarization scrambling for intra-body fiber optic sensor
#51Systems and methods for canceling electrical crosstalk from measurements of optical signals
#52Enhancing functionality of reflectometry based systems using parallel mixing operations
#53Fiber optic personnel safety systems and methods of using the same
#54OPTICAL SENSOR SYSTEMS AND METHODS
#55Method and apparatus for measuring fiber twist by polarization tracking
#56SYSTEM AND METHOD TO COMPENSATE FOR ARBITRARY OPTICAL FIBER LEAD-INS IN AN OPTICAL FREQUENCY DOMAIN REFLECTOMETRY SYSTEM
#57COMPARTMENTALIZED FIBER OPTIC DISTRIBUTED SENSOR
#58Method and apparatus for measuring fiber twist by polarization tracking
#59System For Distributed Measurement of the Curves of a Structure
#60Array temperature sensing method and system
#61Array temperature sensing method and system
#62Determination of a physical state of an optical device
#63Measurement of large strains in ropes using plastic optical fibers