Optical Properties Improvement of Silicon-Based Small Size Arrayed Waveguide Grating for WDM Network

Janvit Tippinit(1*), Weerachai Asawamethapant(2)

(1) Department of Electrical and Computer Engineering, Faculty of Engineering, Thammasat University, KlongLuang, Pathumthani, 12120, Thailand
(2) Department of Electrical and Computer Engineering, Faculty of Engineering, Thammasat University, KlongLuang, Pathumthani, 12120, Thailand
(*) Corresponding author

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This paper presents the design concepts of small size of 1×8 silicon-based arrayed waveguide grating (AWG) de-multiplexer in order to improve its optical properties such as insertion loss and crosstalk. First, Transmission Star Couplers (TSC) is added into Free Propagation Region 1 (FPR1) which has refractive index 1.455. It is found that, the appropriate value of refractive index of TSC area is 1.460. After that, the width of the waveguide in an arrayed waveguide is increased from 6 µm to 8 µm. Here, the insertion loss of AWG is decreased from 1.79 dB to 1.52 dB, while the crosstalk is increased from -23.94 dB to -21.84dB. To maintain the increased crosstalk problem, the traditional output waveguide structure is then replaced by a taper structure which has start width 10 µm and end width 6 µm. As a result, the insertion loss is reduced from 1.52 dB to 1.06 dB, and the crosstalk is reduced from -21.84 dB to -24.13 dB. Furthermore, some part of output waveguides with refractive index 1.460 are overlapped with Free Propagation Region 2 (FPR2) which has refractive index 1.455. The proper length of overlapping regions is 155.2 µm. By using all design concepts, the insertion loss and crosstalk of the proposed AWG are 0.11 dB and -26.80 dB, respectively. Therefore, the appropriate structure of proposed AWG can be achieved. In addition, the size of the proposed AWG is the half of that of the traditional AWG, and its insertion loss is lower than that of the traditional AWG which its insertion loss is 1.26 dB.
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Arrayed Waveguide Grating; Transmission Star Couplers; Insertion Loss; Crosstalk

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J. Zheng, H.T. Mouftah, Optical WDM Networks: Concepts and Design Principles (John Wiley & Sons, 2004).

Tien-Pei Lee, Current Trends in Integrated Optoelectronics (World Scientific, 1994).

Y. K. KENICHI IGA, Encyclopedic Handbook of INTEGRATED OPTICS (Taylor & Francis Group, 2006).

Smit, M.K., PHASAR-Based WDM-Devices: Principles, Design and Applications, Quantum Electronics, IEEE Journal, Volume: 2 (Issue: 2):236- 250,Jun 1996

A.T. Friberg, R.Dändliker, Advances in Information Optics and Photonics (SPIE Press, 2008)

H. Sattari, Arrayed waveguide grating-based demultiplexer with two central wavelengths, Optik - International Journal for Light and Electron Optics, Volume 123(Issue 9):775-778, May 2012.

K. Okamoto, Fundamentals of Optical Waveguides (Academic Press 2010)

Sugita, A., Kaneko, A., Okamoto, K., Itoh, M., Himeno, A. and Ohmori, Y., 2000, Very low insertion loss arrayed-waveguide grating with vertically tapered waveguides, IEEE Photon. Technol. Lett. 12: 1180-1182.

Ooba, N., Hibino, Y., Inoue, Y. and Sugita, A., 2000, Athermal silica-based arrayed-wave-guide grating multiplexer using bimetal plate temperature compensator, Electron. Lett. 36: 1800-1801.

Barbarin, Y., Leijtens, X.J.M., Bente, E.A.J.M., Louzao, C.M., Kooiman, J.R. and Smit, M.K., 2004, Extremely small AWG demultiplexer fabricated on InP by using a double-etch process, IEEE Photon. Technol. Lett. 16: 2478-2480.

M. Amersfoort, Arrayed Waveguide Grating: Design, simulation and layout using OlympIOs(OlympIOs Integrated Optics Software, 1998).

A. W. Ch.Sawitree, "Design of AWG with Small Size for WDM System," Thammasat Journal of Science and Technology, vol. 4, pp. 279-292, October - November 2012

J. Park, Y. Chung, S. Baek, H.J. Lee,“New design for low-loss star couplers and arrayed waveguide grating devices,” IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 14, pp. 651-653, May 2002

L. T. Tenek, E. C. Aifantis, Deformation of a Two-Dimensional, Shear Deformable Cantilever Beam Using Gradient Elasticity and Finite Differences, (2008) International Review of Mechanical Engineering (IREME), 2 (2), pp. 248 – 255.

MaamarAbdelkarim, YounesTouhami, BachirBounegta, Spatio - Temporal Identification of a Heat Source in a Diffusive by Solving a Reverse Problem, (2010) International Review of Mechanical Engineering (IREME), 4 (1), pp. 60-64.

E. Benachour, B. Draoui, L. Rahmani, B. Mebarki, L. Belloufa, K. Asnoune, B. Imine, Effect of Positioning the Heating Element on Natural Convection in a Square Cavity (Habitat Type), (2010) International Review of Mechanical Engineering (IREME), 4 (5), pp. 476-481.


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