A method of generating single optical pulse in nanosecond range with the joint uses of electro-optic modulator and nonlinear material

Samanta, Debajyoti; Mukhopadhyay, Sourangshu

doi:10.1016/j.ijleo.2008.12.025

Cited by 19 publications

(2 citation statements)

References 11 publications

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“…To organize the operation all the input beams should be drawn from a single coherent laser source. As the thickness of the NLM and LM are very small (≈mm), so a metre order of coherent Table 1 Truth table for AND (c) Based on this switching action several all-optical logic devices and gates have been proposed [13][14][15][16][17][18][19]. So, we have not discussed the action of these types of switches for all other logic gates.…”

Section: Optical Switchesmentioning

confidence: 99%

An all-optical architecture of serial to parallel converter by using Kerr type of non-linear material

Mitra

Samanta

Mukhopadhyay

2010

J Opt

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Optics is a strong and potential candidate in the field of both communication and data processing because of its several inherent advantages. In digital communication the conversion of serial to parallel and parallel to serial data is very much essential for adopting some special modulation. In this communication the authors propose a new concept of developing an all-optical converter which converts a serial data to parallel one. For this purpose the authors use several optical logic gates specifically AND,

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Section: Optical Switchesmentioning

confidence: 99%

An all-optical architecture of serial to parallel converter by using Kerr type of non-linear material

Mitra

Samanta

Mukhopadhyay

2010

J Opt

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“…In order to modulate light wave, the electro optic effect can be considered as one of these different methods. Electro-optic modulator (EOM) devices are developed to be applied in communications [28][29][30]. These devices can be employed for optimum performance at a single wavelength, whose performance with wideband and multimode lasers degrades to some extent [31,32].…”

Section: Introductionmentioning

confidence: 99%

Implementation of electro-optic amplitude modulator in the external cavity of semiconductor laser for generation of periodic sates and chaos control

Mabhouti

Jafari

2016

IJPR

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In this paper, by placing the electro optical modulator (EOM) into the external cavity of the semiconductor laser (SL) and amplitude modulation of the optical feedback, the dynamical variation of the output intensity 2 ( ) E of the laser has been studied. This is analyzed numerically via bifurcation and time series diagrams with respect to the applied amplitude modulation index, and modulation voltage frequency of the EOM. It has been shown that, by modulating the amplitude of the optical feedback beam, various changes in the types of the dynamics of 2 E can be observed, and various periodic states can be generated. This makes it possible to receive the desired dynamics without any variations in the main parameters of the SL. Also, in present study, a method of chaos control in the SL has been presented based on EOM in the external cavity. The obtained results confirm that based on this method the chaotic dynamics can be controlled single-periodic dynamics.

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Chiral Azo polyurethane(urea): Preparation, optical properties and low power consumption polymeric thermo‐optic switch

Liu

Qiu

Cao

et al. 2011

J Polym Sci B Polym Phys

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Azo chromophore molecule (NPMBR) was synthesized by using 4‐nitroaniline, sodium nitrite and chiral reagent, R‐α‐methyl benzylamine. Then, NPMBR was polymerized with isophorone diisocyanate and polyether polyol to obtain novel chiral azo polyurethane(urea) (PUUR). The chemical structures of NPMBR and PUUR were characterized by FTIR and UV‐Vis spectroscopy. The UV‐induced trans/cis photoisomerization and reflex‐isomerization behaviors were investigated and the results indicated that the PUUR solution could undergo photochromism after irradiated by UV light. The measurements of refractive index and thermo‐optic coefficient (dn/dT) of PUUR were demonstrated at different wavelengths and different temperatures by ATR technique. By using CCD digital imaging devices, transmission loss of the internal waveguide was measured. The refractive index dispersions and Sellmeyer coefficients of PUUR were obtained by Sellmeyer equation. A Y‐branched switch based on thermo‐optic effect was proposed and the performance of switch was simulated. With branching angle of 0.143° and FD‐BPM method, the result showed that the power consumption of the thermo‐optic switch could be only 0.4 mW, and the response time of the switch could reach about 3 ms. It has a significant improvement in reducing the power consumption and response time compared with those of the normal Y‐branched polymer thermo‐optic switch. © 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2011

show abstract

A method of generating single optical pulse in nanosecond range with the joint uses of electro-optic modulator and nonlinear material

Cited by 19 publications

References 11 publications

An all-optical architecture of serial to parallel converter by using Kerr type of non-linear material

An all-optical architecture of serial to parallel converter by using Kerr type of non-linear material

Implementation of electro-optic amplitude modulator in the external cavity of semiconductor laser for generation of periodic sates and chaos control

Chiral Azo polyurethane(urea): Preparation, optical properties and low power consumption polymeric thermo‐optic switch

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