Theory and design of narrowband band-stop filters using slotted ground resonators

2021 ◽  
pp. 1-15
Author(s):  
C.R. Lakshmi ◽  
Dhanaraj Kannadassan
Keyword(s):  
Transfer Function ◽  
Narrow Band ◽  
Detailed Report ◽  
Coupled Mode ◽  
Design And Implementation ◽  
Band Pass ◽  
Mode Resonator

This paper reports the demonstration of design and implementation of narrow band band-stop filters using slotted ground resonators. Using coupled-mode resonator theory, the systematic implementation of BSFs are performed to achieve narrow stopband (<25% FBW) with desired stopband isolation. By exchanging the band-pass transfer function polynomials, the BSF design has become straight-forward with these band-stop resonators. Designed and optimized BSFs are fabricated, characterized and analysed as a detailed report. Slotted ground resonators yield compact and scalable BSFs which are potential alternatives for the development of future microwave systems.

scholarly journals Passive optimization of pump noise transfer function by narrow band-pass filtering in femtosecond fiber lasers

2019 ◽  
Vol 7 ◽  
Author(s):  
Peng Qin ◽  
Sijia Wang ◽  
Minglie Hu ◽  
Youjian Song
Keyword(s):  
Transfer Function ◽  
Fiber Lasers ◽  
Transfer Functions ◽  
Narrow Band ◽  
Band Pass Filter ◽  
Intensity Noise ◽  
Pass Filter ◽  
Noise Transfer Function ◽  
Femtosecond Fiber Lasers ◽  
Band Pass

Fluctuation of pump power is one of the major sources of temporal and intensity noise in femtosecond fiber lasers. In this work, the transfer functions between the relative intensity noise (RIN) of the pump laser diode (LD) and the output RIN, between the RIN of the pump LD and timing jitter of femtosecond fiber lasers are systematically studied. It is demonstrated, for the first time to our knowledge, that the amplitude of the pump RIN transfer function can be effectively decreased by an intra-cavity narrow band-pass filter. In particular, for normal-dispersion lasers, the 3-dB bandwidth of the transfer function can also be narrowed by two-thirds, with a steeper falling edge. Furthermore, with the narrow band-pass filtering, the transfer function is almost independent of the net intra-cavity dispersion due to amplifier similariton formation. The proposed scheme can effectively isolate the pump-induced noise without the need of complex active pump LD control and intra-cavity dispersion management, thus providing an easy way for practical high-power, high-stability femtosecond fiber laser design and related high-precision applications outside the laboratory.

Modulation transfer function testing of FPA using narrow-band laser speckle

2000 ◽  
Author(s):  
Qing Hua ◽  
Wenlong Zheng ◽  
Yuguang Li ◽  
Yinzhong Liang ◽  
Ping'an He ◽  
...  
Keyword(s):  
Transfer Function ◽  
Modulation Transfer Function ◽  
Narrow Band ◽  
Laser Speckle ◽  
Modulation Transfer ◽  
Function Testing ◽  
Narrow Band Laser

Superconducting narrow band pass filters for advanced multiplexers

2002 ◽  
Author(s):  
A. Fathy ◽  
D. Kalokitis ◽  
V. Pendrick ◽  
E. Balohoubek ◽  
A. Pique ◽  
...  
Keyword(s):  
Narrow Band ◽  
Band Pass

Application of communication network theory to the electromagnetic seismograph

1964 ◽  
Vol 54 (5A) ◽  
pp. 1479-1489
Author(s):  
S. Dopp
Keyword(s):  
Communication Network ◽  
Transfer Function ◽  
Equivalent Circuit ◽  
Network Theory ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Electromagnetic Seismograph ◽  
Band Pass

Abstract Communication network theory is applied to the equivalent circuit of the electromagnetic seismograph. The seismograph's transfer function is derived in the general case of an arbitrary linear passive coupling network between pendulum and galvanometer. Examples are given, one of which refers to the construction of a band-pass filter in the form of a lattice of filter galvanometers.

Plasmonic Metasurface Filter with Full Color Sensitivity and Narrow Band-pass in Visible Region

JETP Letters ◽  
2021 ◽  
Author(s):  
R. Zhang ◽  
X. Guo ◽  
H. Qiu ◽  
X. Liu ◽  
M. Han ◽  
...  
Keyword(s):  
Narrow Band ◽  
Visible Region ◽  
Full Color ◽  
Color Sensitivity ◽  
Band Pass
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