All-optical hash code generation and verification for low latency communications.

We introduce an all-optical, format transparent hash code generator and a hash comparator for data packets verification with low latency at high baudrate. The device is reconfigurable and able to generate hash codes based on arbitrary functions and perform the comparison directly in the optical domain. Hash codes are calculated with custom interferometric circuits implemented with a Fourier domain optical processor. A novel nonlinear scheme featuring multiple four-wave mixing processes in a single waveguide is implemented for simultaneous phase and amplitude comparison of the hash codes before and after transmission. We demonstrate the technique with single polarisation BPSK and QPSK signals up to a data rate of 80 Gb/s.

[1]  B. Eggleton,et al.  Dispersion Trimming in a Reconfigurable Wavelength Selective Switch , 2008, Journal of Lightwave Technology.

[2]  Hiroyuki Uenohara,et al.  Investigation of all-optical error detection circuit using SOA-MZI-based XOR gates at 10 Gbit/s , 2009 .

[3]  Kamran Azadet,et al.  Equalization and FEC techniques for optical transceivers , 2002, IEEE J. Solid State Circuits.

[4]  Takashi Mizuochi,et al.  A triple-concatenated FEC using soft-decision decoding for 100 Gb/s optical transmission , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[5]  N. Kumano,et al.  Pulse compression techniques using highly nonlinear fibers , 2007, 2007 Conference on Lasers and Electro-Optics (CLEO).

[6]  Michael Freiberger,et al.  Low latency optical services , 2012, OFC/NFOEC.

[7]  P. Andrekson.  Picosecond optical sampling using four-wave mixing in fibre , 1991 .

[8]  Peter J. Winzer,et al.  Advanced Optical Modulation Formats , 2006, Proceedings of the IEEE.

[9]  David Graham Moodie,et al.  Full 10/spl times/10 Gbit/s OTDM data generation and demultiplexing using electroabsorption modulators , 1998 .

[10]  M. S. Moreolo,et al.  Optical Fiber Communication Conference , 2014 .

[11]  Jürgen Van Erps,et al.  OSNR Monitoring of a 1.28 Tbaud Signal by Interferometry Inside a Wavelength-Selective Switch , 2011, Journal of Lightwave Technology.

[12]  Benjamin J Eggleton,et al.  An optical FPGA: reconfigurable simultaneous multi-output spectral pulse-shaping for linear optical processing. , 2013, Optics express.

[13]  Xiang Zhou,et al.  Multilevel modulations and digital coherent detection , 2009 .

[14]  Hiroyuki Uenohara,et al.  Investigation of All-Optical Division Processing using a SOA-MZI-based XOR gate for All-Optical FEC with Cyclic Code , 2010 .

[15]  Jian Wang,et al.  All-optical 40 Gbit/s CSRZ-DPSK logic XOR gate and format conversion using four-wave mixing. , 2009, Optics express.

[16]  Leif Katsuo Oxenløwe,et al.  1.28 Tbit/s single-polarisation serial OOK optical data generation and demultiplexing , 2009 .

[17]  Takashi Mizuochi,et al.  Forward error correction for 100 G transport networks , 2010, IEEE Communications Magazine.

[18]  Alan E Willner,et al.  Simultaneous optical digital half-subtraction and -addition using SOAs and a PPLN waveguide. , 2007, Optics express.

[19]  B. Eggleton,et al.  Single parameter optimization for simultaneous automatic compensation of multiple orders of dispersion for a 1.28 Tbaud signal. , 2011, Optics express.

[20]  Steve Madden,et al.  Photonic chip based ultrafast optical processing based on high nonlinearity dispersion engineered chalcogenide waveguides , 2012 .

[21]  Yu Zhao,et al.  FEC for high speed optical transmission , 2011, 2011 Asia Communications and Photonics Conference and Exhibition (ACP).

[22]  T. Mizuochi,et al.  Recent progress in forward error correction and its interplay with transmission impairments , 2006, IEEE Journal of Selected Topics in Quantum Electronics.