TY - JOUR
T1 - Photoinduced modifications in fiber gratings inscribed directly by infrared femtosecond irradiation
AU - Martínez, Amós
AU - Dubov, Mykhaylo
AU - Khrushchev, Igor
AU - Bennion, Ian
PY - 2006/11/1
Y1 - 2006/11/1
N2 - The structure of fiber Bragg gratings inscribed pointby-point by an infrared femtosecond laser is studied by quantitative phase microscopy. Results show that these gratings present a central region with a depressed refractive index surrounded by an outer corona with increased refractive index. The refractive index profile suggests the presence of microvoids embedded in a region of the core. © 2006 IEEE.
AB - The structure of fiber Bragg gratings inscribed pointby-point by an infrared femtosecond laser is studied by quantitative phase microscopy. Results show that these gratings present a central region with a depressed refractive index surrounded by an outer corona with increased refractive index. The refractive index profile suggests the presence of microvoids embedded in a region of the core. © 2006 IEEE.
KW - femtosecond microfabrication
KW - fiber Bragg gratings (FBGs)
UR - http://www.scopus.com/inward/record.url?scp=34247142355&partnerID=8YFLogxK
UR - http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1715396
U2 - 10.1109/LPT.2006.884883
DO - 10.1109/LPT.2006.884883
M3 - Article
SN - 1041-1135
VL - 18
SP - 2266
EP - 2268
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 21
ER -