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Experimental Observation of Low Noise and Low Drift in a Laser-Driven Fiber Optic Gyroscope
Backscattering drift backscattering noise fi ber optic gyroscope laser phase noise
2015/8/7
We demonstrate that by driving a fiber optic gyroscope (FOG) with a laser of relatively broad linewidth( ), both the noise and the bias drift are reduced to very low levels (0.058 and 1.1 , resp...
Observation of Narrow linewidth Beat Signal for Millimeter Wave Generation using MZM-Based Flat Comb Generator
Modulators Two-wave mixing
2015/6/4
We showed 100 GHz beat signals and estimated the linewidth of the beat signal. 100 GHz-spaced optical modes were extracted from 12.5 GHz-spaced comb signals. The linewidth was narrower than 1 Hz.
Channel-Allocation-Adaptive WDM Signal Observation Based on Sequential Ultrafast Field Sampling
Channel-Allocation-Adaptive WDM Signal
2015/7/20
A novel technology for simultaneous WDM signal monitoring is presented based on ultrafast field sampling. Its adaptivity for channel allocation and/or channel bandwidth is unique and attractive as is ...
Observation and analysis of cladding modes in photonic crystal fiber
Observation analysis cladding modes photonic crystal fiber
2015/7/14
We report the observation of cladding modes that are the lowest-order modes having the major optical power in the air-hole region of a photonic crystal fiber. The field profiles agree well with numeri...
A New Optical Fiber System with Hybrid Functions of Power Delivery and Real-Time Remote Observation for YAG Laser Welding
YAG laser Welding and cutting Image information
2009/6/12
In the International Thermonuclear Experimental Reactor (ITER), pipe welding/cutting has to be carried out under severe gamma-ray conditions in a limited space inside the pipe. A laser and image trans...
Two-Photon Microscopy for the Observation of Internal Defects in Semiconductor Crystals in Three-Dimensions
Two-photon excitation Laser scanning microscopy Confocal microscopy
2009/6/12
We present a method of three-dimensional observation of internal defects in semiconductor crystals for blue lasers by use of two-photon process. We excite photoluminescence by using two-photon process...
Living Plant Observation by a Laser Speckle Microscopy
Laser Speckle Laser Microscope Tissue Observation Cell Observation
2009/6/2
Observation of a living plant was performed by a laser speckle microscopy. The merit of this technique is that it is possible to easily obtain information of organisms without any special preparations...
Spatial, Temporal, and Interchannel Image Data Fusion for Long-Distance Terrestrial Observation Systems
Spatial Temporal Interchannel Image Data Fusion Long-Distance Terrestrial Observation Systems
2009/5/19
This paper presents methods for intrachannel and interchannel fusion of thermal and visual sensors used in long-distance terrestrial observation systems. Intrachannel spatial and temporal fusion mecha...
Improvement of the transmission of chalcogenide photonic crystal fibres:observation of self phase modulation spectral broadening
chalcogenide photonic crystal fibres phase modulation spectral broadening
2015/8/4
We present a chalcogenide photonic crystal fibre design with a lowest attenuation of 3dB/m at 1,55 μm. We observe, for the first time, self phase modulation spectral broadening.