Optical switch based on a fluid-filled photonic crystal fiber Bragg grating.
We report the implementation of an in-fiber optical switch by means of filling a fluid into the air holes of a photonic crystal fiber with a fiber Bragg grating. Such a switch can turn on/off light transmission with an extinction ratio of up to 33 dB within a narrow wavelength range (Bragg wavelength) via a small temperature adjustment of +/-5 degrees C. The switching function is based on the temperature-dependent coupling between the fundamental core mode and the rod modes in the fluid-filled holes resulting from the thermo-optic effect of the filled fluid.
Wang
Yiping
Y
Department of Electrical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China. ypwang@china.com
Jin
Wei
W
Jin
Long
L
Tan
Xiaoling
X
Bartelt
Hartmut
H
Ecke
Wolfgang
W
Moerl
Klaus
K
Schroeder
Kerstin
K
Spittel
Ron
R
Willsch
Reinhardt
R
Kobelke
Jens
J
Rothhardt
Manfred
M
Shan
Liye
L
Brueckner
Sven
S