Optical switch fabrics for terabit-class routers and packet switches [Invited]

Next-generation switches and routers may rely on optical switch fabrics to overcome cost, power, space, and scalability problems that arise in sizing traditional electrical backplanes into the terabit regime. However, several technological and architectural problems must be overcome to be able to use such an approach. The reconfiguration times of optical packet fabrics are longer than those of electronic fabrics. Even though we can relax some of the constraints in switching speed by using appropriate packetization and scheduling mechanisms, we need to adapt optical technology to the needs of packet switching. We present an optical packet fabric design, based on arrayed waveguide gratings and fast wavelength tuning, and present methods for solving the technical problems of fast switching.

[1]  D. Van Thourhout,et al.  Compact digitally tunable laser , 2003, IEEE Photonics Technology Letters.

[2]  H. Takahashi,et al.  Fabrication of 128-channel arrayed-waveguide grating multiplexer with 25 GHz channel spacing , 1996 .

[3]  M. Zirngibl,et al.  Long-Term Wavelength Switching Measurements with Random Schedules on Fast Tunable Lasers , 2002, 2002 28TH European Conference on Optical Communication.

[4]  M. Smit.  New focusing and dispersive planar component based on an optical phased array , 1988 .

[5]  Leandros Tassiulas,et al.  Scheduling algorithms for optical packet fabrics , 2003, IEEE J. Sel. Areas Commun..

[6]  Thierry Zami,et al.  First demonstration of an asynchronous optical packet switching matrix prototype for multi-terabit-class routers/switches , 2001, Proceedings 27th European Conference on Optical Communication (Cat. No.01TH8551).

[7]  M. Kauer,et al.  16-Channel Digitally Tunable Packet Switching Transmitter with Sub-Nanosecond Switching Time , 2002, 2002 28TH European Conference on Optical Communication.

[8]  J. E. Fouquet,et al.  Compact optical cross-connect switch based on total internal reflection in a fluid-containing planar lightwave circuit , 2000, Optical Fiber Communication Conference. Technical Digest Postconference Edition. Trends in Optics and Photonics Vol.37 (IEEE Cat. No. 00CH37079).

[9]  Rajaram Bhat,et al.  Multistripe Array Grating Integrated Cavity (MAGIC) Laser: A New Semiconductor Laser for WDM Applications , 1992 .

[10]  K.E. Petersen,et al.  Silicon as a mechanical material , 1982, Proceedings of the IEEE.

[11]  N. Sahri,et al.  A highly integrated 32-SOA gates optoelectronic module suitable for IP multi-terabit optical packet routers , 2001, OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171).

[12]  L. Coldren,et al.  Theory, design, and performance of extended tuning range semiconductor lasers with sampled gratings , 1993 .

[13]  C. Dragone.  An N*N optical multiplexer using a planar arrangement of two star couplers , 1991, IEEE Photonics Technology Letters.

[14]  Mk Meint Smit,et al.  PHASAR-based WDM-devices: Principles, design and applications , 1996 .

[15]  Balaji Prabhakar,et al.  The throughput of data switches with and without speedup , 2000, Proceedings IEEE INFOCOM 2000. Conference on Computer Communications. Nineteenth Annual Joint Conference of the IEEE Computer and Communications Societies (Cat. No.00CH37064).

[16]  Rajiv Ramaswami,et al.  MEMS technology for optical networking applications , 2001, IEEE Commun. Mag..

[17]  C. Dragone,et al.  Large N x N waveguide grating routers , 2000, Journal of Lightwave Technology.

[18]  Marco Ajmone Marsan,et al.  Input-queued router architectures exploiting cell-based switching fabrics , 2001, Comput. Networks.

[19]  Nick McKeown,et al.  A Starvation-free Algorithm For Achieving 100% Throughput in an Input- Queued Switch , 1999 .

[20]  R. Pullela,et al.  A fully integrated 40-Gb/s clock and data recovery IC with 1:4 DEMUX in SiGe technology , 2001 .

[21]  D. J. Robbins,et al.  A widely tunable Digital Supermode DBR laser with high SMSR , 2002, 2002 28TH European Conference on Optical Communication.

[22]  Nick McKeown,et al.  Matching output queueing with a combined input/output-queued switch , 1999, IEEE J. Sel. Areas Commun..

[23]  Junichi Sasaki,et al.  Hybrid integrated 4/spl times/4 optical matrix switch using self-aligned semiconductor optical amplifier gate arrays and silica planar lightwave circuit , 1998 .

[24]  Ikuo Mito,et al.  First 8*8 semiconductor optical matrix switches using GaAs/AlGaAs electro-optic guided-wave directional couplers , 1992 .

[25]  Eyal Shekel,et al.  64 /spl times/ 64 fast optical switching module , 2002, Optical Fiber Communication Conference and Exhibit.

[26]  Thomas E. Anderson,et al.  High-speed switch scheduling for local-area networks , 1993, TOCS.

[27]  F. Schäfer,et al.  ORGANIC DYE SOLUTION LASER , 1966 .

[28]  Clinton Randy Giles,et al.  The Lucent LambdaRouter: MEMS technology of the future here today , 2002, IEEE Commun. Mag..

[29]  J. Gripp,et al.  A Widely Tunable Laser Transmitter with Fast, Accurate Switching Between All Channel Combinations , 2002, 2002 28TH European Conference on Optical Communication.

[30]  H. Okayama,et al.  Prototype 32*32 optical switch matrix , 1994 .

[31]  F. G. Storz,et al.  Grating Assisted InGaAsP/InP Vertical Co-directional Coupler Filter , 1989, Integrated and Guided-Wave Optics.

[32]  Leandros Tassiulas,et al.  Reduced Complexity Input Buffered Switches , 2000 .