scholarly journals Novel complex gratings with third-order group-delay variations for tunable pure dispersion slope compensation

2008 ◽  
Vol 16 (16) ◽  
pp. 12090 ◽  
Author(s):  
Xuewen Shu ◽  
Elena Turitsyna ◽  
Kate Sugden ◽  
Ian Bennion
Keyword(s):  
Group Delay ◽  
Third Order ◽  
Dispersion Slope ◽  
Order Group ◽  
Slope Compensation ◽  
Novel Complex ◽  
Delay Variations

Tunable interchannel broad-band dispersion-slope compensation for 10-Gb/s WDM systems using a nonchannelized third-order chirped FBG

2003 ◽  
Vol 15 (1) ◽  
pp. 144-146 ◽  
Author(s):  
Y.W. Song ◽  
S.M.R.M. Nezam ◽  
D. Starodubov ◽  
J.E. Rothenberg ◽  
Z. Pan ◽  
...  
Keyword(s):  
Broad Band ◽  
Third Order ◽  
Dispersion Slope ◽  
Band Dispersion ◽  
Slope Compensation

scholarly journals Very compact UWB antenna with group delay improvement

2015 ◽  
Vol 12 (2) ◽  
pp. 197-204 ◽  
Author(s):  
Esmaeel Tahanian ◽  
Hamidreza Hasani
Keyword(s):  
Time Domain ◽  
Return Loss ◽  
Group Delay ◽  
Frequency Characteristics ◽  
Back Side ◽  
Antenna Gain ◽  
Uwb Antenna ◽  
Delay Variations ◽  
The Time Domain

In this paper, very compact (12mm?17mm) and simple UWB antenna is proposed. The achieved bandwidth of the presented antenna is from 3.05 GHz to 12.5 GHz and in the most of the bandwidth, the return loss is less than -20dB. In addition to frequency characteristics, time characteristics such as group delay variations for three different antenna positions, namely, front to front, back to back and side by side using CST MW studio are simulated and discussed. To improve the group delay variations, by changing the radius of the circle on the back side of the antenna, the antenna gain in different frequencies will be tuned, therefore, the time domain characteristics of the proposed antenna are greatly improved.

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