All-Optical Orthogonal Frequency-division multiplexing Filter

  • Shaikha O. Al Shamsi

Student thesis: Master's Thesis

Abstract

The rapid growth of Internet traffic and development of applications enhance high capacity and cost effectiveness in optical communication technologies. This rapid growth requires an efficient spectrum, flexibility of data-rate, and energy efficiency of optical network systems in the future. Recently, a system based on orthogonal frequency-division multiplexing (OFDM) technology has attracted attention due to its relative simplicity and ability to address the above-mentioned requirements. OFDM transmission is a multi-carrier modulation technique, which transmits high-bandwidth data streams using multiple low-speed subcarriers that are spectrally overlapping. In addition to its spectral efficiency, it provides strength against inter-carrier and inter symbol interference. This research targets the implementation of a compact, low-loss, and highly efficient photonics OFDM optical receiver frontend. The device is designed and integrated in a silicon photonics (SiPh) platform. In this technology, silicon nano-wires are used. The optical circuit is based on an inverse Fourier tap and delay filter architecture. It integrates 4 parallel channels; each provides a capacity of 10 Gbit/Sec.
Date of AwardAug 2015
Original languageAmerican English
SupervisorMahmoud Rasras (Supervisor)

Keywords

  • Optical Filters
  • OFDM
  • Filtering
  • Discrete Fourier Transform
  • Wavelength
  • Phase shifters.

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