TY - JOUR
T1 - Birefringence in optical fibers formed by proton implantation
AU - Yu, Seung Jun
AU - Suzuki, Masahiro
AU - Ohki, Yoshimichi
AU - Fujimaki, Makoto
AU - Awazu, Kouichi
AU - Yamaguchi, Eisuke
AU - Okude, Satoshi
PY - 2007/12
Y1 - 2007/12
N2 - Birefringence can be induced in silica-based optical fibers by ion implantation. In the present research, protons were implanted in single-mode optical fibers with two different energies, one being the energy with which the protons can just reach the center of the optical fiber core and the other being a slightly lower energy. The degree of birefringence was evaluated by measuring reflection spectra of Bragg gratings formed at the proton-implanted region of the optical fibers. The results confirmed that birefringence is induced by unidirectional densification along the projected range of protons formed in the fiber core and by densification of the fiber cladding. The induced birefringence reached three to ten times higher than that of a conventional birefringent fiber. The birefringence caused by ion implantation can be a versatile tool for manufacturing various optical fiber devices.
AB - Birefringence can be induced in silica-based optical fibers by ion implantation. In the present research, protons were implanted in single-mode optical fibers with two different energies, one being the energy with which the protons can just reach the center of the optical fiber core and the other being a slightly lower energy. The degree of birefringence was evaluated by measuring reflection spectra of Bragg gratings formed at the proton-implanted region of the optical fibers. The results confirmed that birefringence is induced by unidirectional densification along the projected range of protons formed in the fiber core and by densification of the fiber cladding. The induced birefringence reached three to ten times higher than that of a conventional birefringent fiber. The birefringence caused by ion implantation can be a versatile tool for manufacturing various optical fiber devices.
KW - Birefringence
KW - Ion implantation
KW - Polarization-maintaining optical fibers
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U2 - 10.1016/j.nimb.2007.09.044
DO - 10.1016/j.nimb.2007.09.044
M3 - Article
AN - SCOPUS:36448973061
VL - 265
SP - 490
EP - 494
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
SN - 0168-583X
IS - 2
ER -