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A novel scheme is proposed to extend the pulse duration based on a programmable dispersion loop. The repetition period is 1024-fold increased by a magneto-optic switch and the duration is recirculated by 50 times.
In this paper, we present an environmentally stable all-polarization-maintaining Erbium-doped Q-switched fiber laser based on WSe2-PVA as a saturable absorber. WSe2-PVA film is synthesized by liquid phase exfoliation. We let the fiber laser continue to work twelve hours, and we keep a record of the output power, optical spectrum, and frequency spectrum every thirty minutes. The results shows the stability...
In this paper, we report a MoSe2-PVA based saturable absorber and related experiment results of polarization maintaining Q-switched fiber laser. MoSe2-PVA film is synthesized by liquid phase exfoliation method and its saturable absorption is measured via a nonlinear transmission experiment. The result shows that MoSe2-PVA saturable absorber has a modulation depth of 9.8%, which demonstrates its potential...
We demonstrate an experimental realization of the time-stretch configured fiber Bragg grating (FBG) interrogator with an ultrafast speed. The interrogator consists of a home-made ultrabroadband fiber laser, an FBG sensor array, and two dispersive elements (single mode fibers). A time-stretch method is employed to convert the wavelength shift of the FBG sensor array to time shift via the principle...
A novel approach is presented to generate linearly-chirped microwave waveforms with tunable center frequency and expandable time-bandwidth product (TBWP). Different types of waveforms are demonstrated and the maximum measured TBWP is up to ∼166.4.
This paper presents an adaptive noise cancellation method for time-interleaved photonic analog-to-digital converters (TIPADC), where a part of the optical sampling clock signal is divided to back-end processing module to eliminate the amplitude noises in the optical sampling clock induced by laser sources and the pulse repetition rate multiplication like OTDM. The principle of the proposed method...
A approach to generate the time-wavelength interweaved sampling clock for photonic A/D converters is proposed. The generation of 7.87 Gs/s time-wavelength interweaved sampling clock is demonstrated using 4 WDM channels and 54 time OTDM.
We experimentally study the impact of spectrum slicing on pulsewidth for the generation of multi-wavelength pulses. Pulse broadening caused by spectral filtering and dispersion is analyzed and compared.
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