Article

Repetition Rate Multiplication of Pseudorandom Bit Sequences

Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Athens
IEEE Photonics Technology Letters (Impact Factor: 2.04). 05/2009; DOI: 10.1109/LPT.2009.2013330
Source: IEEE Xplore

ABSTRACT We develop a method for the repetition rate multiplication by a factor of 2 n of pseudorandom bit sequences (PRBSs). It makes recursive use of an optical or-gate in feedback and ensures that the complexity of the resulting circuit is independent of the multiplication factor or the PRBS order to be rate multiplied. We employ an all-optical circuit comprising of two nonlinear fiber Sagnac interferometers and show error-free quadrupling of 12.5-Gb/s PRBSs to 50 Gb/s.

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