Generation of higher degree chaos by controlling harmonics of the modulating signal in EDFRL

Ali, Syed Zafar; Islam, Md. Ariful; Zafrullah, M.

doi:10.1016/j.ijleo.2010.11.022

Cited by 14 publications

(3 citation statements)

References 19 publications

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“…(2), for each branch, a fiber optic delay line emitts the pulse to the suitable position, and the sum of the phase shift intrduced by the fiber optic delay line and the phase shift is zero. [15][16][17] EDFRLs are used to generate optical nonlinear sequences by using loss modulation through variation of driving conditions and cavity parameters.…”

Section: Fig (1) Interferometer Of the Mach-zehndermentioning

confidence: 99%

“…Equations above clears that the EDFRL is a second order and coupled system. The system dynamic ruled by two rate equations one for field 𝐸 𝐿𝐴 and other for population inversion 𝐷 𝐴 as given by equations ( 14) to (17). Prior to illustrating the results, the Bit Error Rate (BER) for the 2 × 2 free space optics used to determine the system performance can be expressed in equation ( 28)…”

Section: Fig (1) Interferometer Of the Mach-zehndermentioning

confidence: 99%

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On the Performance of All Optical Wireless Communications Based on Optical Nonlinear Generators

Abdulameer

Mahdi

2020

DJES

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Erbium Doped Fiber Ring Laser (EDFRL) and Mach-Zehnder Interferometer (MZI) are being used to generate optical nonlinear signals to increase the level of security. Using nonlinear components in communication systems are the leading cause of inferiority in all system performance. One of the most significant current adopted to improve system performance is to use multiple sources at transmitter and multiple sources at receiver. The aim of this paper is to explore this technology to reduce the overall system complexity and improve its performance via designing an all optical wireless diversity technique to benefit from generating the nonlinear optical signals by the optical components. The design of different optical nonlinear modulation schemes for optical wireless communications is presented in this paper. EDFRL and MZI are important components in optical systems used to generate nonlinear optical for secure communications which are generate sequence by exploiting nonlinearities. We evaluate and compare the Bit-Error Rate (BER) versus SNR at a distance of 500 meter between optical emitter and detector in a wireless channel using electrical generators and optical generators (all optical components). We compared the BER performance for different diversity schemes whereas the results show the performance superiority for the system with multiple inputs (LEDs) and multiple outputs (photodetectors) as compared with systems using single input single output. We used OPTSYS software to simulate the results.

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Section: Fig (1) Interferometer Of the Mach-zehndermentioning

confidence: 99%

Section: Fig (1) Interferometer Of the Mach-zehndermentioning

confidence: 99%

On the Performance of All Optical Wireless Communications Based on Optical Nonlinear Generators

Abdulameer

Mahdi

2020

DJES

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show abstract

“…The optical oscillators generating a chaotic carrier signal are erbium‐doped fibre lasers [17] or semiconductor lasers [18]. Semiconductor ring lasers [19], erbium‐doped fibre ring lasers [20], vertical cavity surface emitting lasers [21], random feedback fibre distributed lasers [22] and optoelectronic oscillators [23]. Among these different kinds of lasers, the semiconductor laser is generally used in secure ODB modulation where high bandwidth chaos is required.…”

Section: Introductionmentioning

confidence: 99%

Security improved duobinary optical communication scheme through bio‐inspired chaos masking scheme

Ravindran

Nithiyanantham²

2020

IET Optoelectronics

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Effect of transmission fiber and amplifier noise on optical chaos synchronization

Ali¹,

Islam

Zafrullah

2012

OPT REV

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Generation of higher degree chaos by controlling harmonics of the modulating signal in EDFRL

Cited by 14 publications

References 19 publications

On the Performance of All Optical Wireless Communications Based on Optical Nonlinear Generators

On the Performance of All Optical Wireless Communications Based on Optical Nonlinear Generators

Security improved duobinary optical communication scheme through bio‐inspired chaos masking scheme

Effect of transmission fiber and amplifier noise on optical chaos synchronization

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