All-optical pseudorandom binary sequence generator with TOAD-based D flip-flops

Zoiros, Kyriakos E.; Das, Mantu Kumar; Gayen, Dilip Kumar; Maity, Hirak Kumar; Chattopadhyay, Tanay; Roy, Jitendra Nath

doi:10.1016/j.optcom.2011.05.007

Cited by 42 publications

(24 citation statements)

References 42 publications

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“…Gold sequences are constructed by using a pair of specially selected m-sequences to form a new modified sequence which is denoted as a Gold sequence (Wornell 1995;Popovic 1999;). An all-optical pseudo random binary sequence (PRBS) generator has been reported which makes use of a terahertz optical asymmetric demultiplexer (TOAD) and semiconductor optical amplifier (SOA)-assisted gate to effectively combine fast switching time and has the benefits of reasonable noise figure (Zoiros et al 2011;Sokoloff et al 1993;Zhang et al 2003). More specifically, this realization would develop ultrahigh speed diagnostic and measurement equipment with comparative performance over their electronic counterparts.…”

Section: Introductionmentioning

confidence: 99%

All-optical TOAD based new binary sequence generator

et al. 2016

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Spread-spectrum communication, with its inherent interference attenuation capability, has over the years become an increasingly popular technique for use in many different systems. In multiuser environment, Gold sequences are an important class of sequences that allow construction of long sequences. To achieve this goal, a modified Gold code generator in all-optical domain using semiconductor optical amplifier based terahertz optical asymmetric demultiplexer (TOAD) is explored in this paper. All-optical Gold code generator circuit realization is TOAD based D flip-flop and exclusive-OR logic gates in a configuration analogous to the standard electronic setup, with properties similar to that of both Gold and Kasami sequences. It is compatible with a multichannel direct sequence spread spectrum system. Numerical simulation confirmed the circuit's feasibility and performance in terms of the choice of the critical parameters. However, the proposed sequence generator circuit is more complex than the existing Gold sequence generator, but it is less complex than the Kasami sequence and has performance better than both.Keywords Terahertz optical asymmetric demultiplexer Á R-S and D-flip-flop Á m-Sequence Á Gold code Á Pseudorandom binary new sequence & Goutam Kumar Maity

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Section: Introductionmentioning

confidence: 99%

All-optical TOAD based new binary sequence generator

et al. 2016

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“…For instance, Wagemans has proposed a scheme of PRBS generator based on double-loop flip-flop with a complex structure and a low rate at 10 kb/s [5]. Zoiros has proposed a PRBS generator by the TOAD-based D flip-flops [6], and Ma also has proposed a PRBS generation based on quantum-dot semiconductor optical amplifiers [7]. However, they were just realized by theoretical simulation without any experimental result and their structures are complex [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…Zoiros has proposed a PRBS generator by the TOAD-based D flip-flops [6], and Ma also has proposed a PRBS generation based on quantum-dot semiconductor optical amplifiers [7]. However, they were just realized by theoretical simulation without any experimental result and their structures are complex [5,6]. In this context, there is another method to obtain a high rate of PRBS, which is the ultraspeed all Optical repetition rate multiplication of PRBS.…”

Section: Introductionmentioning

confidence: 99%

All-optical repetition rate multiplication of pseudorandom bit sequences based on cascaded TOADs

Sun

Wang

et al. 2016

Optics Communications

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“…An all-optical regenerative memory device using a single loop mirror and a SOA has been proposed, which is capable of storing a 4.4 k bit data packet for a period of one second (Johnson et al 2008). An alloptical pseudorandom binary sequence generator with TOAD-based D flip-flops has been described in (Zoiros et al 2011). In this work, LiNbO 3 based MZIs are used to implement the universal shift register (USR).…”

Section: Introductionmentioning

confidence: 99%

Design of universal shift register based on electro-optic effect of LiNbO3 in Mach–Zehnder interferometer for high speed communication

2015

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An optical universal shift register has been demonstrated based on the electrooptic effect of lithium niobate (LiNbO 3 ) in Mach-Zehnder interferometer (MZI), which can be used as a building block for optical computing and optical signal processing systems. The proposed device comprises of two serially connected optical D flip-flops and two multiplexers. Each optical D flip-flop consists out of three MZIs sharing a single clock pulse. The two cascaded multiplexers are controlled by the electric pulses in order to perform the bidirectional shifting and parallel loading operation of optical pulses. The pulse shifting behavior is analyzed using Beam propagation method and verified with the help of MATLAB simulations and function table.

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All-optical pseudorandom binary sequence generator with TOAD-based D flip-flops

Cited by 42 publications

References 42 publications

All-optical TOAD based new binary sequence generator

All-optical TOAD based new binary sequence generator

All-optical repetition rate multiplication of pseudorandom bit sequences based on cascaded TOADs

Design of universal shift register based on electro-optic effect of LiNbO3 in Mach–Zehnder interferometer for high speed communication

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