Now showing items 11-20 of 21
Nonlinear coupling of relative intensity noise from pump to a fiber ring laser mode-locked with carbon nanotubes
Pump relative intensity noise (RIN) has been recognized as a major source of noise in mode-locked lasers. The coupling of RIN from the pump to the output of a passively mode-locked fiber laser (PMFL) is systematically ...
A wavelength switchable passively harmonically mode-locked fiber laser with low pumping threshold using single-walled carbon nanotubes
We propose and demonstrate a wavelength switchable passively harmonically mode-locked fiber laser with low pumping threshold using single-walled carbon nanotubes (SWCNT). When the pumping power of 980 nm laser diode is 60 ...
Experimental observations of multiple solitons generation in a carbon-nanotube based passively mode-locked fiber laser
We report the experimental observations of multiple solitons generation from a carbon nanotube (CNT) -based passively mode-locked fiber lasers. After a fiber-connector-type saturable absorber in which CNT is coated on the ...
Phase noise tolerant inter-carrier-interference cancellation for WDM superchannels with sub-Nyquist channel spacing
We propose and demonstrate a novel multi-input multi-output (MIMO) equalization based inter-carrier-interference (ICI) cancellation approach employing constant modulus algorithm (CMA) for supperchanels with sub-Nyquist ...
Relative phase noise estimation and mitigation in Raman amplified coherent optical communication system
The interplay between the stochastic intensity fluctuation of Raman pump laser and cross-phase modulation (XPM) effect in transmission optical fiber leads to additional phase noise, namely, relative phase noise (RPN) of ...
Programmable multi-wavelength filter with Mach–Zehnder interferometer embedded in ethanol filled photonic crystal fiber
We experimentally demonstrated a free spectrum range (FSR) tunable comb filter based on a programmable thermo-controlled Mach–Zehnder interferometer. The device is constructed by sandwiching a length of ethanol-filled ...
Programmable wavelength-tunable second-order optical temporal differentiator based on a linearly chirped fiber Bragg grating and a digital thermal controller
We proposed and experimentally demonstrated an all-fiber structured wavelength-tunable second-order optical temporal differentiator based on a linearly chirped fiber Bragg grating and a digital-controlled thermal array. ...
Harnessing oversampling in correlation-coded OTDR
Coding technique has long been investigated as a solution to improve the signal-to-noise ratio (SNR) without sacrificing spatial resolution in optical time domain reflectometry (OTDR) systems. The past researches have been ...
Programmable bandwidth-variable optical temporal differentiator based on linearly chirped fiber bragg grating and digital thermal controller
We experimentally demonstrate an all-fiber structured bandwidth variable second-order optical temporal differentiator based on linearly chirped fiber Bragg grating and digital thermal controller. The bandwidth can be ...
Simultaneous Measurement of Torsion and Temperature Based on Helical Structure in Multicore Fiber
An all-fiber torsion sensor based on a helical structure in a multicore fiber is demonstrated. The sensor exhibits the ability of discriminating torsion direction, torsion angle and temperature.