In this paper, the Fano resonance in the “eye-like” microring resonator system (EMRS) is theoretically and experimentally investigated. The asymmetric Fano-resonance line shape of EMRS is generated by adding a microring inside and coupling with the outer ring to produce a nonlinear phase shift. The EMRS was fabricated on silicon-on-insulator wafer by the complementary metal-oxide-semiconductor compatible process. Compared to the conventional single-stage microring add-drop filter structure, the maximum sharpness of the transmission of the drop port is enhanced 3 times, and the drop port extinction ratio is increased by about 20 dB. The experimental results are in good agreement with the theoretical analysis.
REFERENCES
1.
S.
Xiao
, M. H.
Khan
, H.
Shen
, and M.
Qi
, J. Lightwave Technol.
26
, 228
(2008
).2.
N.
Sherwood-Droz
, H.
Wang
, L.
Chen
, B. G.
Lee
, A.
Biberman
, K.
Bergman
, and M.
Lipson
, Opt. Express
16
, 15915
(2008
).3.
K. D.
Vos
, I.
Bartolozzi
, E.
Schacht
, P.
Bienstman
, and R.
Baets
, Opt. Express
15
, 7610
(2007
).4.
C.
Chao
, W.
Fung
, and L.
Guo
, IEEE J. Sel. Top. Quantum Electron.
22
, 134
(2006
).5.
M.
Sumetsky
, Opt. Lett.
32
, 2577
(2007
).6.
L.
Zhang
, M.
Song
, T.
Wu
, L.
Zou
, R. G.
Beausoleil
, and A. E.
Willner
, Opt. Lett.
33
, 1978
(2008
).7.
L.
Tobing.
D.
Lim
, P.
Dumon
, R.
Baets
, and M.
Chin
, Appl. Phys. Lett.
92
, 101122
(2008
).8.
L.
Mario
, S.
Darmawan
, and M. K.
Chin
, Opt. Express
14
, 12770
(2006
).9.
F.
Wang
, X.
Wang
, H.
Zhou
, Y.
Hao
, X.
Jiang
, M.
Wang
, and J.
Yang
, Opt. Express
17
, 7708
(2009
).10.
B.
Li
, Y.
Xiao
, C.
Zou
, X.
Jiang
, Y.
Liu
, F.
Sun
, Y.
Li
, and Q.
Gong
, Appl. Phys. Lett.
100
, 021108
(2012
).11.
Q.
Huang
, X.
Zhang
, J.
Xia
, and J.
Yu
, Opt. Lett.
36
, 4494
(2011
).12.
A.
Yariv
, IEEE Photonics Tech. Lett.
14
, 483
(2002
).13.
D.
Dai
, Opt. Express
17
, 23817
(2009
).14.
J. V.
Hryniewicz
, P. P.
Absil
, B. E.
Little
, R. A.
Wilson
, and P. T.
Ho
, IEEE Photonics Technol. Lett.
12
, 320
(2000
).© 2012 American Institute of Physics.
2012
American Institute of Physics
You do not currently have access to this content.