Photonic transitions in waveguides can create nonreciprocal phase response for counterpropagating modes. Such effect can be used in Mach–Zehnder interferometers to form optical isolators and circulators. Performance of such device is analyzed using coupled mode theory given the experimentally available modulation in silicon. The proposed scheme can provide a broadband , high contrast ratio optical isolation at telecommunication wavelength.
REFERENCES
1.
M.
Soljacic
and J. D.
Joannopoulos
, Nature Mater.
3
, 211
(2004
).2.
R. L.
Espinola
, T.
Izuhara
, M. C.
Tsai
, R. M.
Osgood
, Jr., and H.
Dötsch
, Opt. Lett.
29
, 941
(2004
).3.
M.
Levy
, J. Opt. Soc. Am. B
22
, 254
(2005
).4.
T. R.
Zaman
, X.
Guo
, and R. J.
Ram
, Appl. Phys. Lett.
90
, 023514
(2007
).5.
H.
Dötsch
, N.
Bahlmann
, O.
Zhuromskyy
, M.
Hammer
, L.
Wilkens
, R.
Gerhardt
, P.
Hertel
, and A. F.
Popkov
, J. Opt. Soc. Am. B
22
, 240
(2005
).6.
M.
Soljačič
, C.
Luo
, J. D.
Joannopoulos
, and S.
Fan
, Opt. Lett.
28
, 637
(2003
).7.
K.
Gallo
, G.
Assanto
, K. R.
Parameswaran
, and M. M.
Fejer
, Appl. Phys. Lett.
79
, 314
(2001
).8.
Z.
Yu
and S.
Fan
, Nat. Photonics
3
, 91
(2009
);See also
S. J. B.
Yoo
, Nat. Photonics
3
, 77
(2009
).9.
J. N.
Winn
, S.
Fan
, J. D.
Joannopoulos
, and E. P.
Ippen
, Phys. Rev. B
59
, 1551
(1999
).10.
B. E. A.
Saleh
and M. C.
Teich
, Fundamentals of Photonics
, 2nd ed. (Wiley
, New York
, 2007
), p. 1033
.11.
R. A.
Soref
and B. R.
Bennett
, IEEE J. Quantum Electron.
23
, 123
(1987
).12.
L.
Liao
, A.
Liu
, D.
Rubin
, J.
Basak
, Y.
Chetrit
, H.
Nguyen
, R.
Cohen
, N.
Izhaky
, and M.
Paniccia
, Electron. Lett.
43
, 1196
(2007
).13.
Q.
Xu
, B.
Schmidt
, S.
Pradhan
, and M.
Lipson
, Nature (London)
435
, 325
(2005
).© 2009 American Institute of Physics.
2009
American Institute of Physics
You do not currently have access to this content.
