Integrated MMI couplers based 4×4 all optical switch with absolute loss uniformity

Ghanshyam Singh, R.P. Yadav, Vijay Janyani,

Abstract


We present a compact, low-loss, completely non-blocking 4x4 optical switch possessing loss uniformity with a negligible variation of 0.8%-1.5%. It is observed that the total switching loss ranges from 1.8% to 4.1% only with fabrication tolerances of +/-2.5%. Integration of MMI waveguides approach has been used to optimize switching speed, losses and overall on chip area coverage of the proposed switch.

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References:
  1. G.I. Papadimitriou, Ch. Papazoglou, and A.S. Pomportsis (2003) ?Optical Switching: Switch Fabrics, Techniques, and Architectures? J. Lightwave Technol. 21, 384-405 (2003) [CrossReff]
  2. R. Yin, J. Yang, X. Jiang, J. Li, and M. Wang ?Improved approach to low-loss and high-uniformity MMI devices? Opt. Commun. 181, 317-321 (2000). [CrossReff]
  3. R. Ramaswami, K.N. Sivarajan, Optical networks: A practical perspective, 2nd Edition, Morgan Kaufmann, 2002.
  4. Z. Tao, J. Chen, D. Wu, A. Xu, ?Nonblocking 3x3 OXC with less optical switches? Fifth Asia-Pacific Conference on Communications and Fourth Optoelectronics and Communications Conference, 1999. APCC/OECC '99. Vol. 1, 18-22 Oct. 1999 page(s):454 ? 455, 1999.
  5. M.P. Earnshaw, J.B.D. Soole, M. Cappuzzo, L. Gomez, E. Laskowski, A. Paunescu ?Compact, low-loss 4 x 4 optical switch matrix using multimode interferometers?, Electron. Lett. 37, 115-116 (2001). [CrossReff]
  6. D.S. Levy, Y. M. Li, R. Scarmozzino, and R.M. Osgood, ?A Multimode Interference-Based Variable Power Splitter in GaAs?AlGaAs? IEEE Photonics Tech. Lett. 9, 1373-1375 (1997) [CrossReff]
  7. S.R. Kisting et al ?High precision temperature- and energy-dependent refractive index of GaAs determined from excitation of optical waveguide eigenmodes?, Appl. Phys. Lett. 57, 1328 (1990) [CrossReff]
  8. F. Wang, J. Yang, L. Chen, X. Jiang, and M. Wang, ?Optical switch based on multimode interference coupler?, IEEE Photonics Technol. Lett. 18, (2006).
  9. S. Kumai, T. Ishikawa, A. Okazaki, K. Utaka, H. Amanai, K. Kurihara, and K. Shimoyama, ?High-speed optical switching of InAlGaAs/InAlAs multi-mode interference photonic switch with partial index-modulation region (MIPS-P)?, IEICE Electron. Express 2, 578-582 (2005) [CrossReff]
  10. N. Xie and K. Utaka, ?Proposal of a Novel MMI-Based NxN Non-Blocking Optical Ring Switch?, Optical Fiber Communication and the National Fiber Optic Engineers Conference, OFC/NFOEC, page: 1 ? 3, 25-29 March 2007.
  11. S. S. Agashe, K.-T. Shiu, and S. R. Forrest ?Compact polarization-insensitive InGaAsP?InP 2x 2 optical switch? IEEE Photonics Technol. Lett. 17, (2005).
  12. Ch. Shaowu; Y. Jinzhong; L. Jingwei; W. Zhangtao; X. Jinsong, ?First IEEE International Conference on Group IV Photonics, 29 Sept.-1 Oct. 2004 Page(s):46 ? 48, 2004.
  13. Y..Jinzhong et al. ?Research progresses of SOI optical waveguide devices and integrated optical switch matrix? Science in China Press, co-published with Springer-Verlag GmbH, page no. 234-246, Vol. 48, No.2, April, 2005.
  14. Z. Jin and G. Peng, ?Designing optical switches based on silica multimode interference devices? Progress in Electromagnetic Research Symposium 2005, Hangzhou, China, August 22-26, page no. 58-61, 2005.
  15. OptiBPM ?Technical background and tutorials? waveguide optics modeling software system, Version 8.0, second edition, Optiwave Inc. 2006.
  16. M. Maier, ?Optical switching networks?, University of Québec, Montréal, Cambridge publications, ISBN-13: 9780521868006, 2008.

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Photonics Letters of Poland - A Publication of the Photonics Society of Poland
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