A5010276777- Advanced Measurement and Metrology Techniques
- Advanced Fiber Laser Technologies
- Solid State Laser Technologies
- Advanced Wireless Communication Techniques
- Advanced Fiber Optic Sensors
- Advanced MEMS and NEMS Technologies
- Spectroscopy and Laser Applications
- Telecommunications and Broadcasting Technologies
- Sparse and Compressive Sensing Techniques
- PAPR reduction in OFDM
- Wireless Communication Networks Research
- Photonic and Optical Devices
- Blind Source Separation Techniques
- Industrial Technology and Control Systems
- Matrix Theory and Algorithms
- Sensor Technology and Measurement Systems
- Advanced Algorithms and Applications
- Advanced MIMO Systems Optimization
- Laser Design and Applications
- Power Line Communications and Noise
- Scientific Measurement and Uncertainty Evaluation
Nagaoka University of Technology
2018-2020
Nagaoka University
2018
University of Saskatchewan
2017
We propose a sinusoidal phase modulation method to achieve both the frequency stabilization of an external-cavity laser diode (ECLD) 127I2 saturated absorption transition near 633 nm and displacement measurement using Mach–Zehnder interferometer. First, ECLD is stabilized b21 hyperfine component P(33) 6-3 by combining electro-optic modulator spectroscopy chopping pump beam acousto-optic modulator. Even though small index m = 3.768 rad utilized, relative stability 10−11 order obtained over...
This paper shows how to suppress residual amplitude modulation (RAM) appeared in a commercial electro-optic modulator (EOM) improve an iodine-frequency-stabilized laser diode (LD) using frequency spectroscopy (FMS). Since the RAM of EOM is affected by temperature EOM, DC-offset applied and polarization incident beam, it should easily fluctuate with drifts temperature, voltage, polarization. The fluctuation which might decrease stability LD, must be eliminated some means. In this paper, we...
Circular filter bank multicarrier communication (C-FBMC) is an emerging technique which combines the classical FBMC/OQAM with circular convolution. It has a block based structure and achieves orthogonality among subcarriers. This paper applies Walsh-Hadamard precoding scheme to C-FBMC exploit frequency diversity in multipath channel. The theoretical approximation for bit error rate (BER) of resultant scheme, abbreviated WHT-C-FBMC, derived. Its BER performance also compared precoded GFDM....
In this paper, direct phase determination method which is based on the phase-locked loop technique and null proposed for heterodyne-displacement-measuring interferometers. The requirement of to detect high-speed changes in shift between two sinusoidal input signals, leading measuring displacements industrial applications. estimated situations that include use (a) pure signals from a function generator (b) interferometric heterodyne interferometer, integrated an electro-optic modulator...