Optimization of photonic crystal cavity for chemical sensing

被引：71
作者：
Kwon, Soon-Hong [1 ]
Sunner, Thomas [1 ]
Kamp, Martin [1 ]
Forchel, Alfred [1 ]
机构：
[1] Univ Wurzburg, Tech Phys, D-97074 Wurzburg, Germany
来源：
OPTICS EXPRESS | 2008年 / 16卷 / 16期
关键词：
D O I：
10.1364/OE.16.011709
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We optimize photonic crystal cavities for enhancing the sensitivity to environmental changes by finite-difference time-domain method. For the heterostructure cavity created by local modulation of the air hole radius, the resonance shifts due to refractive index change of the background material are investigated. The shifts can be enhanced by reducing the photonic crystal slab thickness or introducing air holes in the cavity. The sensitivity of the thinner slab with central air holes is 310nm/RIU ( refractive index unit). The heterostructure created in the slotted waveguide of thin PhC slab shows better sensitivity of 512nm/RIU owing to strong confinement of electric field in the low-index region. (c) 2008 Optical Society of America.
引用
收藏
页码：11709 / 11717
页数：9
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    Almeida, VR
    Xu, QF
    Barrios, CA
    Lipson, M
    [J]. OPTICS LETTERS, 2004, 29 (11) : 1209 - 1211
  • [2] Ultra-high-Q microcavity operation in H2O and D2O -: art. no. 151118
    Armani, AM
    Armani, DK
    Min, B
    Vahala, KJ
    Spillane, SM
    [J]. APPLIED PHYSICS LETTERS, 2005, 87 (15) : 1 - 3
  • [3] Heavy water detection using ultra-high-Q microcavities
    Armani, Andrea M.
    Vahala, Kerry J.
    [J]. OPTICS LETTERS, 2006, 31 (12) : 1896 - 1898
  • [4] Ultracompact biochemical sensor built with two-dimensional photonic crystal microcavity
    Chow, E
    Grot, A
    Mirkarimi, LW
    Sigalas, M
    Girolami, G
    [J]. OPTICS LETTERS, 2004, 29 (10) : 1093 - 1095
  • [5] Dispersion control and slow light in slotted photonic crystal waveguides
    Gupta, Dhritiman
    Bag, Monojit
    Narayan, K. S.
    [J]. APPLIED PHYSICS LETTERS, 2008, 92 (08)
  • [6] Ultrahigh-Q photonic crystal nanocavities realized by the local width modulation of a line defect -: art. no. 041112
    Kuramochi, E
    Notomi, M
    Mitsugi, S
    Shinya, A
    Tanabe, T
    Watanabe, T
    [J]. APPLIED PHYSICS LETTERS, 2006, 88 (04) : 1 - 3
  • [7] Small, low-loss heterogeneous photonic bandedge laser
    Kwon, SH
    Kim, SH
    Kim, SK
    Lee, YH
    [J]. OPTICS EXPRESS, 2004, 12 (22): : 5356 - 5361
  • [8] Ultrahigh-Q photonic crystal cavity created by modulating air hole radius of a waveguide
    Kwon, Soon-Hong
    Suenner, Thomas
    Kamp, Martin
    Forchel, Alfred
    [J]. OPTICS EXPRESS, 2008, 16 (07) : 4605 - 4614
  • [9] On-chip microfluidic tuning of an optical microring resonator
    Levy, U
    Campbell, K
    Groisman, A
    Mookherjea, S
    Fainman, Y
    [J]. APPLIED PHYSICS LETTERS, 2006, 88 (11)
  • [10] Photonic crystal laser sources for chemical detection
    Loncar, M
    Scherer, A
    Qiu, YM
    [J]. APPLIED PHYSICS LETTERS, 2003, 82 (26) : 4648 - 4650
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