Dissertations / Theses on the topic 'Optical communication equipment'

Thesis (M. Eng. Sc.)--University of Adelaide, 1987.
Typescript. Includes a copy of a paper presented at TADSEM '85 --Australian Seminar on Devices for Expressive Communication and Environmental Control, co-authored by the author. Includes bibliographical references (leaves [115-121]).

Recent experiments with optical fibers have reached a remarkable development for optical communication spectroscopy as well as a medical technology. Hollow optical fibers are required for optical communications. The measurement of the transmission of light through fibers can provide information about the fiber quality and about the far-field energy which radiates from the fiber end. We used five flexible hollow fused quartz fibers to study laser beam propagation down the fiber axis. Five different refractive index fluids were prepared and inserted into the fiber core to measure the transmitted intensity as a function of core property. The plots of the normalized, relative transmitted intensity measured as a function of the beam insertion point show the dependence of the transmitted intensity as a function of fiber diameter and refractive index fluid.

The evolving needs of network carriers are changing the design of optical networks. In order to reduce cost, latency, and power consumption, electrical switches are being replaced with optical switching fabrics at the core of the networks. An example of such a network is an Agile All-Photonic Network (AAPN).
This thesis presents a novel device that was designed to operate as an optical switch within the context of an AAPN network. The device is a Reprogrammable Optical Phase Array (ROPA), and the design consists of applying multiple electric fields of different magnitudes across an electro-optic material in order to create a diffractive optical element. The configuration of the electric fields can change to modify the properties of the diffractive device.
Such a device has a wide range of potential applications, and two different ROPA designs are presented. Both designs are optimized to function as 1xN optical switches. The switches are wavelength tunable and have switching times on the order of microseconds. The ROPA devices consist of two parts: a bulk electro-optic crystal, and a high-voltage CMOS chip for the electrical control of the device. The design, simulation, fabrication and testing of both the electrical and optical components of the devices are presented.

Thesis (Ph. D.)--School of Electrical and Computer Engineering, Georgia Institute of Technology, 2004. Directed by Spyros G. Pavlostathis.
Vita. Includes bibliographical references (leaves 332-345).

Thesis (M.S. in Operations Research and M.S. in Applied Mathematics)--Naval Postgraduate School, June 2008.
Thesis Advisor(s): Alderson, David ; Zhou, Hong. "June 2008." Description based on title screen as viewed on August 22, 2008. Includes bibliographical references (p. 39-40). Also available in print.

碩士
國立高雄第一科技大學
電子工程系碩士在職專班
105
The communication construction includes copper , optical fiber and link is a work of high price and high complexity, the training of operators is not easy, the maintenance of optical fiber equipment is expensive and the price of setting up the training site, resulting in limited number of training. At present, some research has been designed simulation system of optical fiber link building and equipment operation. This system is an assisted Instruction which is difficult for beginners to self-learning , so they must be guided with people by the side . This thesis apply an interactive multimedia e-book editing software called Smart Apps Creator in the development self-learning system of communication Deployment and optical fiber equipment measurement to ensure that learners do pre-learning before the actual participation in the erection and know every component and introduce of equipment exactly. By doing so , learners can quickly understand the problem and make amendments to ensure that there is no harm in the process and reduce the risk of damage to equipment.

"January 2004."
Thesis (Ph.D.)--Chinese University of Hong Kong, 2004.
Includes bibliographical references.
Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.
Mode of access: World Wide Web.
Abstracts in English and Chinese.

Wan Shan Mei.
Thesis (M.Phil.)--Chinese University of Hong Kong, 2006.
Includes bibliographical references.
Abstracts in English and Chinese.
Abstract
Acknowledgements
Chapter Chapter 1 --- Introduction
Chapter 1.1 --- History of Semiconductor Optical Amplifier In Optical Networks --- p.1
Chapter 1.2 --- Comparisons of SOAs With Other Amplifiers --- p.3
Chapter 1.2.1 --- Erbium Doped Fiber Amplifier (EDFA) --- p.3
Chapter 1.2.2 --- Raman Amplifiers --- p.5
Chapter 1.2.3 --- Parametric Amplifiers --- p.7
Chapter 1.3 --- The Need of SO A for Wavelength Conversion in Optical Networks --- p.8
Chapter 1.3.1 --- General Applications of SOAs --- p.8
Chapter 1.3.2 --- Wavelength Conversion of SOAs --- p.9
Chapter 1.4 --- Cross Gain Modulation (XGM) --- p.11
Chapter 1.5 --- Cross Phase Modulation (XPM) --- p.13
Chapter 1.6 --- Four Wave Mixing (FWM) --- p.16
Chapter 1.7 --- Bi-refringence Switching --- p.19
Chapter 1.8 --- Conclusion --- p.22
Chapter 1.9 --- References --- p.22
Chapter Chapter 2 --- Physics of Semiconductor Optical Amplifier and Background of Quantum Well Semiconductor Optical Amplifier
Chapter 2.1 --- Physics of Semiconductor Optical Amplifier --- p.26
Chapter 2.1.1 --- General Structure of SOAs --- p.26
Chapter 2.1.2 --- Principles of Optical Amplification --- p.27
Chapter 2.1.3 --- Material Gain Coefficient --- p.29
Chapter 2.1.4 --- Bulk Material Properties of SOAs --- p.32
Chapter 2.1.5 --- Spontaneous Emission Noise --- p.34
Chapter 2.1.6 --- Polarization Sensitivity --- p.37
Chapter 2.1.7 --- Dynamics Effects --- p.38
Chapter 2.2 --- Background of Quantum Wells Semiconductor Optical Amplifier --- p.38
Chapter 2.2.1 --- Definition of Quantum Well SOAs --- p.38
Chapter 2.2.2 --- Different Types of Quantum Well SOAs --- p.39
Chapter 2.2.3 --- Quantization of the Conduction Band and Valence Band --- p.40
Chapter 2.3 --- Comparison Between Bulk and Quantum Well SOAs --- p.44
Chapter 2.3.1 --- Gain Bandwidth --- p.44
Chapter 2.3.2 --- Polarization Dependence --- p.44
Chapter 2.3.3 --- Saturation Output Power --- p.45
Chapter 2.4 --- Conclusion --- p.46
Chapter 2.5 --- References --- p.46
Chapter Chapter 3 --- Wideband Wavelength Conversion by XGM in Asymmetrical Multiple Quantum Well Semiconductor Optical Amplifier (AMQW-SOA)
Chapter 3.1 --- Background of Wideband Asymmetrical Multiple Quantum Well Semiconductor Optical Amplifier --- p.47
Chapter 3.1.1 --- Sequence Influence of Non-identical InGaAsP Quantum Wells on SO A Broadband Characteristics --- p.47
Chapter 3.1.2 --- Influence of Separate Confinement Heterostructure on Emission Bandwidth InGaAsP SOAs --- p.54
Chapter 3.2 --- Wideband Wavelength Conversion --- p.58
Chapter 3.2.1 --- First Experiment of Wideband Wavelength Conversion from 1.5 μm to 14 μm by XGM in AMQW-SOA --- p.62
Chapter 3.2.2 --- Second Experiment of Wideband Wavelength Conversion from 1.5 μm to 1.4μm by XGM with 2.5 Gbit/s in AMQW-SOA --- p.64
Chapter 3.2.3 --- Third Experiment of Investigation of Wavelength Conversion from 15 μm to 1.5 μm/1.3 μm by XGM in AMQW-SOA --- p.67
Chapter 3.3 --- Conclusion --- p.69
Chapter 3.4 --- References --- p.71
Chapter Chapter 4 --- Wavelength Conversion by Birefringence Switchingin Asymmetrical Multiple Quantum Well Semiconductor Optical Amplifier (AMQW-SOA)
Chapter 4.1 --- First Experiment of Wideband Wavelength Conversion from 1.5 μm to 1.4 μm by Birefringence Switching in AMQW-SOA --- p.74
Chapter 4.2 --- Second Experiment of Investigation of Wavelength Conversion from 1.5 μm to 1.5μm by Birefringence Switching in AMQW-SOA --- p.76
Chapter 4.3 --- Conclusion --- p.78
Chapter 4.4 --- References --- p.79
Chapter Chapter 5 --- Asymmetrical Multiple Quantum Well Semiconductor Optical Amplifier (AMQW-SOA) for Pattern-Effect Free Gain
Chapter 5.1 --- Examples Methods of Pattern Effect Compensation --- p.81
Chapter 5.1.1 --- Suppression of Pattern Dependent Effects from a Semiconductor Optical Amplifier using an Optical Delay Interferometer (ODI)
Chapter 5.1.2 --- Acceleration of Gain Recovery in QD-SOA --- p.84
Chapter 5.2 --- Background Theory of Quantum Well Reservoirs and Carrier Transit Time --- p.87
Chapter 5.3 --- First Experiment of Pattern Effect Free Amplification in AMQW-SOA --- p.92
Chapter 5.4 --- Second Experiment of Pattern Effect Free Amplification in AMQW-SOA --- p.97
Chapter 5.5 --- Conclusion --- p.102
Chapter 5.6 --- References --- p.103
Chapter Chapter 6 --- Conclusion and Future Work
Chapter 6.1 --- Conclusion --- p.105
Chapter 6.2 --- Future Work --- p.108
Appendix Butterfly Photonic Packaging --- p.109