Simulation and design of a wideband T-shaped photonic crystal splitter

• Autorzy: Foghani S. , Kaatuzian H. , Danaie M.
• Języki publikacji: EN

Abstrakty

EN

In this paper, a high efficiency 2-D T-shaped photonic crystal beam splitter is proposed. It consists of a square lattice of GaAs rods (n = 3.4) embedded in air. The photonic crystal structure proposed can be used for 1550 nm wavelength, which is an important wavelength for optical fiber data transmission. Finite difference time domain (FDTD) simulation results demonstrate that a conventional T-junction can only provide 78% transmission coefficient (39% for each branch) for the incident light, while the proposed T-shaped splitter transmits over 90% of the incident light beam (over 45% from each branch) in the single mode region of waveguide. Especially it transmits nearly 98% (49% from each branch) of the input light in the wavelength of 1550 nm. In other words, the proposed devise shows higher beam splitting efficiency and a wider range of flatness of transmission power spectrum in comparison with previous works.

Słowa kluczowe

EN

photonic crystal; photonic band gap; beam splitter; T-junction; finite difference time domain (FDTD)

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2010
• Tom: Vol. 40, nr 4
• Strony: 863--872
• Opis fizyczny: Bibliogr. 16 poz.

Twórcy

autor

Foghani S.

autor

Kaatuzian H.

autor

Danaie M.

• Photonics Research Laboratory (P.R.L.), Department of Electrical Engineering, Amirkabir University of Technology, Hafez Ave., Tehran, Iran

Bibliografia

• [1] JOANNOPOLOUS J.D., JOHNSON S.G., WINN J.N., MEADE R.D., Photonic Crystals: Molding the Flow of Light, Princeton University Press, Second Edition, 2008.
• [2] KAATUZIAN H., Photonics, Vol. 1, Second Edition, 2008 (in Persian).
• [3] JOHNSON S.G., JOANNOPOULOS J.D., Introduction to Photonic Crystals: Bloch’s Theorem, Band Diagrams, and Gaps, MIT University Press, 2003.
• [4] JOHNSON S.G., JOANNOPOULOS J.D., Photonic Crystals, The Road from Theory to Practice, Springer,2002.
• [5] SHAWN-YU LIN, HIETALA V.M., LYO S.K., ZASLAVSKY A., Photonic band gap quantum well and quantom box structures: A high-Q resonant cavity, Applied Physics Letters 68(23), 1996,pp. 3233–3235.
• [6] VILLENEUVE P.R., SHANHUI FAN, JOANNOPOULOS J.D., Microcavities in photonic crystals: Mode symmetry, tenability and coupling efficiency, Physical Review B 54(11), 1996, pp. 7837–7842.
• [7] HUNG-TA CHIEN, CHII-CHANG CHEN, PI-GANG LUAN, Photonic crystal beam splitters, Optics Communications 259(2), 2006, pp. 873–875.
• [8] GHAFFARI A., MONIFI F., DJAVID M., ABRISHAMIAN M.S., Analysis of photonic crystal power splitters with different configurations, Journal of Applied Sciences 8(8), 2008, pp. 1416–1425.
• [9] SHANHUI FAN, JOHNSON S.G., JOANNOPOULOS J.D., MANOLATOU C., HAUS H.A., Waveguide branches in photonic crystals, Journal of the Optical Society of America B 18(2), 2001, pp. 162–165.
• [10] KAATUZIAN H., DANAIE M., FOGHANI S., Design of a high efficiency wide-band 60 degree Y-branch for TE polarization, OptoElectronics and Communications Conference, OECC 2009, pp. 1–2.
• [11] DANAIE M., ATTARI A.R., MIRSALEHI M.M., NASEH S., Optimization of two-dimensional photonic crystal waveguides for TE and TM polarizations, Optica Applicata 38(4), 2008, pp. 643–655.
• [12] AOKI K., NODA S., BABA T., Roadmap on Photonic Crystals, Kluwer Academic Publishers, 2003.
• [13] GUO S., ALBIN S., Simple plane wave implementation for photonic crystal calculations, Optics Express 11(2), 2003, pp. 167–175.
• [14] SMAJIC J., HAFNER CH., ERNI D., Design and optimization of an achromatic photonic crystal bend,Optics Express 11(12), 2003, pp. 1378–1384.
• [15] HAFNER CH., SMAJIC J., ERNI D., MAS and MMP Simulations of Photonic Crystal Devices, Swiss Federal Institute of Technology, Progress in Electromagnetic Research Symposium, Pisa, Italy,2004.
• [16] MEKIS A., CHEN J.C., KURLAND I., SHANHUI FAN, VILLENEUVE P.R., JOANNOPOULOS J.D., High transmission through sharp bends in photonic crystal waveguides, Physical Review Letters 77(18),1996, pp. 3787–3790.