A comparison of modulation formats for passive optical networks

Comparison of Optical Modulation Formats

Study of Orthogonal Modulation Schemes for Passive Optical Access Networks

In this thesis, the potential of upgrading Passive Optical Networks in order to increase available bandwidth and expand in services and number of users is studied. The upgrade is feasible through the adoption of orthogonal modulation techniques –used in other types of networksadapted adequately to the specific needs of a passive optical network. At first, it is investigated and recorded the sta...

Conversions among binary optical modulation formats.

We study the intrinsic relations and conversions among different binary modulation formats such as non-return-to-zero (NRZ), return-to-zero (RZ), carrier-suppressed return-to-zero (CSRZ), differential-phase-shift-keying (DPSK), duobinary, and alternate-mark-inversion (AMI). In particular, we experimentally demonstrate the new conversion from CSRZ to duobinary using a Mach-Zehnder delay interfer...

Passive Optical Networks

No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Passive optical networks : principles and practice / Cedric F. Lam p. cm. Includes bibliographical references and index.

Passive Optical Networks

The optical access is gaining more interest as the demand for higher and higher bandwidth is getting stronger. The major drivers for larger bandwidth are the increasing processing power of user terminals and development of services that require substantially larger bandwidth than available in present day access networks. The prevailing access techniques, such as the digital subscribes line syst...