Trends in Opto-electro & Optical Communication
Volume 11, Issue 1 (2021)
Published
Table of contents
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Compact Fork-shaped Monopole Antenna for Bluetooth, WLAN and Wi-MAX Applications
Abstract: This paper presents a fork-shaped monopole antenna (FSMA) with compact size. The proposed FSMA consisting a fork-shaped radiator and a partial ground plane with L-shaped and rectangular slits. The size of the proposed FSMA is 34×18×1.6 mm3 which is fed by 50Ω microstrip line. The L-shaped slit is introduced in the ground plane to enhance the bandwidth impedance of the proposed FSMA. The proposed antenna achieved 10dB return loss bandwidth …
Published in Trends in Opto-electro & Optical Communication · Vol. 11, Issue 1, 2021 · pp. 1–6 Read article
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Electroluminescence
Abstract: Electroluminescence (EL) is a kind of luminescence which is an optical and electrical phenomenon in which light is emitted by certain materials due to the passage of an electric current or a strong electric field. The mechanism behind electroluminescence is the radiative recombination, or spontaneous emission. The electrons get excited and release their energy as photons. The holes and electrons before recombining are separated either by doping the given material …
Published in Trends in Opto-electro & Optical Communication · Vol. 11, Issue 1, 2021 · pp. 13–18 Read article
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Simulation of Wavelength Division Multiplexing Based Fiber Optic Link by Using Different Types of Dispersion Compensating Fiber
Abstract: Wavelength division multiplexing multiplies various optical signals on a single optical fiber by using different wavelengths of laser light at the transmitter end and demultiplex them into multiple optical signal at the receiver end . We want to improve overall system performance and reduced as much as possible the transmission performance influenced by the dispersion, several dispersion compensation technologies are involved. In this paper we have studied the WDM based …
Published in Trends in Opto-electro & Optical Communication · Vol. 11, Issue 1, 2021 · pp. 19–24 Read article
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Analysis of a Digitally Wavelength Tunable Optical Filter System
Abstract: A digitally wavelength tunable optical filter system is analysed for timing performance. This digitally tunable optical filter system was recently proposed, it utilized semiconductor optical amplifiers, wavelength selection elements, splitters, combiners and optical fibers for achieving filtering action. This paper presents a theory for calculating transmission/delay times of different wavelengths. The delay time equations are derived for all center wavelengths of the filter. These transmission time calculations can be used …
Published in Trends in Opto-electro & Optical Communication · Vol. 11, Issue 1, 2021 · pp. 25–28 Read article
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Comparative Analysis of OOK and M-ary PPM Modulation Technique over Exponentiated Weibull Distribution under Different Turbulence Regime
Abstract: In this paper, the Exponentiated Weibull distribution has been investigated for different turbulence regime considering the aperture averaging at the receiver. The comparative analysis of modulation technique (on-off keying and pulse position modulation) has been presented for different aperture size under weak, moderate, and strong turbulence regime. The closed form of expression of bit error rate (BER) has been numerically derived from the cumulative distribution function (CDF) using the Gauss- …
Published in Trends in Opto-electro & Optical Communication · Vol. 11, Issue 1, 2021 · pp. 7–12 Read article