Abstract

This Letter presents a beam splitter in a silicon-on-insulator (SOI) ridge waveguide loaded by a photonic crystal row of holes close to the Brewster angle. The propagation of the fundamental guided mode in this structure has been examined by the three-dimensional finite-difference time-domain method. It is shown that a TE-polarized optical beam exhibits the Brewster effect at an incident angle of about 39°, giving a small splitting ratio (<0.04) in a wide spectral range for silica-filled holes with a typical diameter of 200 nm and a spacing of 300 nm. The row of holes close to the Brewster angle is the perspective to be used in developing complementary metal-oxide semiconductor-compatible tunable devices based on multireflector filtering technology.

© 2010 Optical Society of America

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References

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2009

2008

2007

2006

P. Pottier, S. Mastroiacovo, and R. M. De La Rue, Opt. Express 14, 5617 (2006).
[CrossRef] [PubMed]

A. V. Tsarev, “Tunable optical filters,” U.S. patent 6,999,639 (February 14, 2006).

2002

M. Frank, D. Herrmann, and Z. Huang, Lightwave 19, 108 (2002).

1985

1956

S. M. Rytov, Sov. Phys. JETP 2, 466 (1956).

Baets, R.

Bogaerts, W.

Chan, C. C.

De La Rue, R. M.

De Leonardis, F.

Dumon, P.

Frank, M.

M. Frank, D. Herrmann, and Z. Huang, Lightwave 19, 108 (2002).

Herrmann, D.

M. Frank, D. Herrmann, and Z. Huang, Lightwave 19, 108 (2002).

Huang, Z.

M. Frank, D. Herrmann, and Z. Huang, Lightwave 19, 108 (2002).

Mastroiacovo, S.

Passaro, V. M. N.

Pottier, P.

Rytov, S. M.

S. M. Rytov, Sov. Phys. JETP 2, 466 (1956).

Taillaert, D.

Tamir, T.

Tsarev, A. V.

A. V. Tsarev, Opt. Express 17, 13095 (2009).
[CrossRef] [PubMed]

A. V. Tsarev, Quantum Electron. 38, 445 (2008).
[CrossRef]

A. V. Tsarev, F. De Leonardis, and V. M. N. Passaro, Opt. Express 16, 3101 (2008).
[CrossRef] [PubMed]

A. V. Tsarev, “Tunable optical filters,” U.S. patent 6,999,639 (February 14, 2006).

Van Thourhout, D.

Lightwave

M. Frank, D. Herrmann, and Z. Huang, Lightwave 19, 108 (2002).

Opt. Express

Opt. Lett.

Quantum Electron.

A. V. Tsarev, Quantum Electron. 38, 445 (2008).
[CrossRef]

Sov. Phys. JETP

S. M. Rytov, Sov. Phys. JETP 2, 466 (1956).

Other

A. V. Tsarev, “Tunable optical filters,” U.S. patent 6,999,639 (February 14, 2006).

Rsoft Photonic CAD Suite, version 8.0, single license, www.rsofdesign.com.

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Figures (3)

Fig. 1
Fig. 1

General view of ridge-waveguide crossed by a row of holes. Arrows with numbers indicate different mechanisms of scattering loss.

Fig. 2
Fig. 2

Propagation of TE 0 mode in a ridge-waveguide crossed by a row of holes. (a) Power spectrum response at different Ψ. d = 180   nm , a = 280   nm , W = 4 μ m . (b) Power coefficient versus incident angle for different values W and grid sizes G. d = 200   nm , a = 300   nm .

Fig. 3
Fig. 3

Radiation of power in upper silica due to TE 0 mode scattering by a row of holes in ridge-waveguide. Cross section at distance y = 570   nm from core center. (a) Ψ = 30 ° , (b) Ψ = 39 ° . d = 200   nm , a = 300   nm , W = 4 μ m , h = 240   nm . The color scale corresponds to normalized Poynting vector modulus.

Equations (2)

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a N eff ( 1 + sin ( Ψ ) ) < λ 0 ,
Ψ < Ψ c = arcsin ( n r / N eff ) ,

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