TY - JOUR
T1 - Low Optical Loss Connection for Photonic Crystal Slab Waveguides
AU - Gomyo, Akiko
AU - Ushida, Jun
AU - Shirane, Masayuki
AU - Tokushima, Masatoshi
AU - Yamada, Hirohito
PY - 2004/3
Y1 - 2004/3
N2 - Low-loss optical coupling structures between photonic crystal waveguides and channel waveguides were investigated. It was emphasized that impedance matching of guided modes of those waveguides, as well as field-profile matching, was essential to achieving the low-loss optical coupling. We developed an impedance matching theory for Bloch waves, and applied it to designing the low-loss optical coupling structures. It was demonstrated that the optical coupling loss between a photonic crystal waveguide and a Si-channel waveguide was reduced to as low as 0.7 dB by introducing an interface structure for impedance matching between the two waveguides.
AB - Low-loss optical coupling structures between photonic crystal waveguides and channel waveguides were investigated. It was emphasized that impedance matching of guided modes of those waveguides, as well as field-profile matching, was essential to achieving the low-loss optical coupling. We developed an impedance matching theory for Bloch waves, and applied it to designing the low-loss optical coupling structures. It was demonstrated that the optical coupling loss between a photonic crystal waveguide and a Si-channel waveguide was reduced to as low as 0.7 dB by introducing an interface structure for impedance matching between the two waveguides.
KW - Admittance
KW - Immittance of EM Bloch waves
KW - Impedance
KW - Photonic crystal slab
KW - Reflection
KW - Transmission
KW - Trapezoidal interface structure
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M3 - Article
AN - SCOPUS:1642384032
SN - 0916-8524
VL - E87-C
SP - 328
EP - 335
JO - IEICE Transactions on Electronics
JF - IEICE Transactions on Electronics
IS - 3
ER -