Time domain optical reflectometer systems investigation

Jevgenij Charlamov

Doctoral dissertation

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The dissertation investigates the optical time domain reflectometer (OTDR) systems. The main object of research is an optical receiver for OTDR. The aim of the work is to create an optical receiver design methodology to achieve optimal dynamic range of the system for a given bandwidth, design and investigate integrated fully differential variable gain transimpedance amplifier for OTDR optical receiver.

Main tasks solved in this work are: perform analysis of OTDR structures, main specifications and suggest possible improvement approaches; analyze main optical receiver noise sources and noise minimization and create generalized noise model; create optical receiver for an OTDR design methodology, that allow calculating avalanche photodiode multiplication factor, transimpedance amplifier feedback resistance and voltage amplifier input transistor dimensions that achieves optimal OTDR dynamic range; design and perform simulations of transimpedance amplifier integrated circuit using AMS 0.35 µm CMOS technology and calculate optical receiver parameters in 0.1–100 MHz range of bandwidths

The dissertation consists of four parts including Introduction, 4 chapters, Conclusions, References and 1 Annex.

The introduction reveals the investigated problem, importance of the thesis and the object of research. It also describes the purpose and tasks, research methodology, scientific novelty, the practical significance of results examined in the paper and defended statements. The introduction ends in presenting the author’s publications on the subject of the defended dissertation, offering the material of made presentations in conferences and defining the structure of the dissertation.

Chapter 1 revises used literature. At the end of the chapter, conclusions are drawn and the tasks for the dissertation are reconsidered.

Chapter 2 is focusing on analysys of optical receiver and its design methodology development. Structure and noise suoces are analysed, noise model is created and noise minimisation is discussed.

Chapter 3 and 4 shows designed optical receivers from discrete components and based on transimpedance amplifier integrated circuit analysis results.

7 presentations on the subject have been given in conferences at national and international level.  5 articles focusing on the subject of the discussed dissertation are published: 4 articles – in the Thomson ISI register and 1 article – in the journal quoted by Copernicus data base.

Read electronic version of the book:

DOI: https://doi.org/10.20334/2179-M

Book details

Data sheet

Year:
2013
ISBN:
978-609-457-572-3
Imprint No:
2179-M
Dimensions:
145×205 mm
Pages:
138 p.
Cover:
Softcover
Language:
Lithuanian
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