Electrically tunable Bragg gratings in single-mode polymer optical fiber.
We present what is to our knowledge the first demonstration of a tunable fiber Bragg grating device in polymer optical fiber that utilizes a thin-film resistive heater deposited on the surface of the fiber. The polymer fiber was coated via photochemical deposition of a Pd/Cu metallic layer with a procedure induced by vacuum-ultraviolet radiation at room temperature. The resulting device, when wavelength tuned via joule heating, underwent a wavelength shift of 2 nm for a moderate input power of 160 mW, a wavelength to input power coefficient of -13.4 pm/mW, and a time constant of 1.7 s(-1).
Kalli
K
K
Nanophotonics Research Laboratory, Higher Technical Institute, Cyprus. kkalli@cytanet.com.cy
Dobb
H L
HL
Webb
D J
DJ
Carroll
K
K
Komodromos
M
M
Themistos
C
C
Peng
G D
GD
Fang
Q
Q
Boyd
I W
IW