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We analyze the relations of parameters in moving average method to enhance the event detectability of phase sensitive optical time domain reflectometer (OTDR). If the external events have unique frequency of vibration, then the control parameters of moving average method should be optimized in order to detect these events efficiently. A phase sensitive OTDR was implemented by a pulsed light source,...
We report on the high-speed, wide bandwidth Fourier domain mode-locked wavelength swept laser using two SOAs. We obtained the 3 dB gain bandwidth of more than 125 nm and the edge-to-edge gain bandwidth of more than 145 nm at the sweep rate 45.589 kHz. The measured axial resolution of the forward scan is ~ 5.6 mum in tissue.
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