Bit error evaluation of optically preamplified direct detection receiver with Fabry-Perot optical filters

The error performance of a preamplified, direct detection receiver with an optical filter of the Lorentzian type is studied. The analysis takes into account the influence of the optical intersymbol interference (ISI). A closed-form expression of the moment generating function (MGF) of the decision variable is derived. Error probabilities are evaluated from the MGF using a saddlepoint approximation. The Gaussian approximation is also examined. The detection sensitivity in terms of a quantum limit is calculated. The results show that there exists an optimum optical bandwidth, the reason being a tradeoff between the effect of ISI and the spontaneous emission noise. It is also shown that the Gaussian approximation gives a good estimate of the error probability, allowing to find in a simple manner the optimum parameters of optically preamplified, direct detection receive

Técnicas de etiquetado de señales ópticas en redes de conmutación de ráfagas

En este artículo presentamos una revision de los asuntos mas importantes relacionados con las redes de conmutacion de ráfagas de señales ópticas etiquetadas (LOBS - Labeled optical burst switched) y las tecnologias que permitiran en un futuro disponer de redes totalmente ópticas. La conmutacion de ráfagas de señales ópticas etiquetadas permite de un modo rapido y con un mecanismo eficiente de enrutamiento, el direccionamiento de paquetes/ráfagas sobre redes multiplexadas por división de onda (WDM - Wavelength división multiplexing). Por otro lado, y debido a que se unifica el algoritmo de enrutamiento y tiene una baja latencia, esta tecnologia es facilmente escalable hasta rangos de Terabits.Peer Reviewe

In-band time-to-live signaling system for combined DPSK/SCM scheme in OLS

We propose and validate experimentally a time-to-live (TTL) signaling system for an optical label swapping scheme based on 10-Gb/s differential phase-shift-keying (DPSK) packets and with 100-Mb/s subcarrier multiplexing (SCM) label. The proposed scheme allows fast packet discarding by using a 3-GHz subcarrier tone. DPSK payload has only a 2.4-dB power penalty at 10-9 bit-error rate after superimposing the SCM and TTL labeling signal

15 PROFESOR DILANTIK AHLI SENAT USM ISI KEKOSONGAN SESI 2014-2017

USM, PULAU PINANG, 26 Ogos 2016 - Pemilihan Profesor sebagai Ahli Senat Universiti Sains Malaysia (USM) bagi mengisi kekosongan sesi 2014-2017 telah diadakan pada 18 Ogos 2016 lalu secara atas talian atau e-Undi Senat

High-capacity transmission over polymer optical fiber

Abstract-Polymer optical fiber (POF) is a promising transmission medium to provide broad-band telecommunication services within the customer's premises. POF offers several attractive features for data transmission such as broad bandwidth and low cost for in-house, access, and local-area-network (LAN) applications. This paper presents a review on optical transmission systems using POF and their enabling technologies. A summary is given of experimental data links with record capacity over record transmission distances. To conclude, we discuss trends for further development and research. Index Terms-Optical communications, optical fiber, polymer optical fiber