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This study presents the femtosecond fundamental and harmonic mode-locked Er-doped fiber laser with WS2 solution saturable absorber (SSA). The SA is fabricated based on a D-shaped fiber (DF) embedded in WS2 nanosheets solution. Such WS2 solution has virtues of good antioxidant capacity, excellent scattering resistance, high heat dissipation, and high damage threshold. This kind of SA shows a modulation...
The linear metallic particles which are static lying on the GIS enclosure have less harmful to the insulating property. However, the insulating property will reduce in a large degree when the metallic particles once stand and beat in the GIS cavity. Many papers have discussed the behavior of linear particle in the GIS affected by the type and shape of the particles, the pressure of the gas insulation,...
We demonstrate high repetition rate (up to 225 MHz) all-normal dispersion Yb:fiber ring laser. The average output power is 280 mW at a pump power of 6 00 mW. The dechirped pulse is 93 fs.
We demonstrate 330 MHz repetition rate operation in a ring cavity Yb:fiber laser with novel and compact devices. The spectral bandwidth of the pulse is 30 nm and the dechirped pulse width is 48 fs.
The design of a compact microwave diplexer is presented. Folded structures with coupled cavities are used to minimize its size. The sample diplexer is fabricated and the tested results show good agreement with the design target.
A compact filter with coupled shorting stubs is proposed, which also has excellent out-of-band elimination. The structure can produce transmission zeros at both sides of the pass-band of a broadband or a narrow band filter. The configuration parameters and simulated results are presented. Tested results from a sample filter show that the insertion loss is lower than 0.4 dB in the pass-band from 7...
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