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Impact of Raman crosstalk and relative intensity noise transfer on RF overlay in optical passive networks

Title:

Impact of Raman crosstalk and relative intensity noise transfer on RF overlay in optical passive networks

Yang, Hong Feng (2007) Impact of Raman crosstalk and relative intensity noise transfer on RF overlay in optical passive networks. Masters thesis, Concordia University.

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Abstract

In the thesis, we investigate and analyze the impact of Raman crosstalk and RIN transfer on RF video overlay channels induced by 1490-nm optical intensity modulated digital data channel, considering modulation formats of non-return-to-zero (NRZ), return-to-zero (RZ), Inverse-RZ (IRZ), and Manchester coding, fiber length, optical power, optical modulation index and fiber polarization mode dispersion (PMD). Firstly, carrier to noise ration (CNR) degradation due to the worst and best Raman crosstalk due to the Raman crosstalk is compared for NRZ, RZ, inverse RZ and Manchester. It is found that Raman crosstalk is reduced significantly when inverse RZ or Manchester is used, in contrast to NRZ and RZ. By comparing the result of CNR degradation in a real fiber with PMD, it is found that orthogonal polarization state setting at fiber input is still helpful in the reduction of Raman crosstalk for NRZ and RZ, but hardly for inverse RZ and Manchester, if fiber length is less than 15 km, and otherwise useless due to PMD of fiber. Also, relative intensity noise (RIN) transfer induced CNR degradation is analyzed and is too small to be considered.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Electrical and Computer Engineering
Item Type:Thesis (Masters)
Authors:Yang, Hong Feng
Pagination:xv, 73 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Electrical and Computer Engineering
Date:2007
Thesis Supervisor(s):Zhang, John Xiupu
ID Code:975513
Deposited By: Concordia University Library
Deposited On:22 Jan 2013 16:09
Last Modified:18 Jan 2018 17:40
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