TY - JOUR
T1 - Compact photonic crystal disk cavity optimized using the gentle confinement method and boundary design
AU - Kjellman, Jon Øyvind
AU - Tanemura, Takuo
AU - Nakano, Yoshiaki
PY - 2015/4/1
Y1 - 2015/4/1
N2 - A compact, novel photonic crystal cavity aimed at applications with strict area limitations is presented. Optimization shows that the gentle confinement method previously used for line-defect cavities can be applied to more limited geometries. It also shows that it is paramount to consider the boundary region to minimize in-plane losses. The investigation show that a near optimum boundary thickness can be found by considering the boundary region as a Fabry-Pérot resonator. This optimization strategy is shown to be deterministic in terms of resonance wavelength. For an optimized air-clad, silicon cavity, finite-difference time-domain simulations give Q-values as high as 75,000 which is comparable to other photonic crystal cavities of similar size.
AB - A compact, novel photonic crystal cavity aimed at applications with strict area limitations is presented. Optimization shows that the gentle confinement method previously used for line-defect cavities can be applied to more limited geometries. It also shows that it is paramount to consider the boundary region to minimize in-plane losses. The investigation show that a near optimum boundary thickness can be found by considering the boundary region as a Fabry-Pérot resonator. This optimization strategy is shown to be deterministic in terms of resonance wavelength. For an optimized air-clad, silicon cavity, finite-difference time-domain simulations give Q-values as high as 75,000 which is comparable to other photonic crystal cavities of similar size.
UR - http://www.scopus.com/inward/record.url?scp=84961331506&partnerID=8YFLogxK
U2 - 10.7567/JJAP.54.042001
DO - 10.7567/JJAP.54.042001
M3 - Article
AN - SCOPUS:84961331506
VL - 54
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
SN - 0021-4922
IS - 4
M1 - 042001
ER -