Acta Photonica Sinica, Volume. 42, Issue 11, 1283(2013)
Propagation Property of THz Pulses Through a Hollowcore Bragg Fiber with Cobwebby Cladding
The coefficient of loss and dispersion relation of a hollowcore Bragg fiber with cobwebby cladding in the THz band was investigated analytically by adjustable boundary conditions Fourier decomposition method (ABCFDM). The spectra and waveforms for three THz transmitted pulses were calculated through the hollowcore Bragg fiber. The analytical result shows that loss characteristic of the hollowcore Bragg fiber is similar to a highpass filter with variable cutoff frequency and phaseshift constant. Fiber core radius and transmission distance determinate the cutoff frequency of the highpass filters jointly. The hollowcore Bragg fiber only attenuates the THz wave in the band below the cutoff frequency, and significant phaseshift will be yield near the cutoff frequency when the THz pulse pass through the fiber. If the core radius is advisable, THz pulse will be transmitted through the hollowcore Bragg fiber effectively for a short distance.
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ZHANG Baorong, LI Bingxin. Propagation Property of THz Pulses Through a Hollowcore Bragg Fiber with Cobwebby Cladding[J]. Acta Photonica Sinica, 2013, 42(11): 1283
Received: Jul. 1, 2013
Accepted: --
Published Online: Dec. 16, 2013
The Author Email: Baorong ZHANG (lbx1999@126.com)