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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:center;line-height:normal;background:white'><b><span style='font-size:16.0pt;font-family:"Times New Roman","serif"'>PhD Dissertation </span></b><b><span style='font-size:16.0pt;font-family:"Times New Roman","serif"'>Announcement</span></b><span style='font-size:16.0pt;font-family:"Times New Roman","serif";color:#222222'><o:p></o:p></span></p><p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:center;line-height:normal;background:white'><b><span style='font-size:16.0pt;font-family:"Times New Roman","serif"'>HIGH SPEED MULTI-CHANNEL OPTICAL ROUTER DESIGN IN DENSE WAVELENGTH DIVISION MULTIPLEXING </span></b><span style='font-size:16.0pt;font-family:"Times New Roman","serif";color:#222222'><o:p></o:p></span></p><p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:center;line-height:normal;background:white'><b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Wenhao Chen</span></b><b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:#222222'><o:p></o:p></span></b></p><p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:center;line-height:normal;background:white'><b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Date: July 3<sup>rd</sup>, 2014<o:p></o:p></span></b></p><p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:center;line-height:normal;background:white'><b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Time: 10:00 AM – 12:00 PM</span></b><span style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#222222'><o:p></o:p></span></p><p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:center;line-height:normal;background:white'><b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Place: N328-D<o:p></o:p></span></b></p><p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:center;line-height:normal;background:white'><b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Committee Chair: </span></b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Dr. Yuhua Chen<span style='color:#222222'><o:p></o:p></span></span></p><p class=MsoNormal align=center style='mso-margin-top-alt:auto;margin-bottom:0in;margin-bottom:.0001pt;text-align:center;line-height:normal;background:white'><b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Committee Members:</span></b><span style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#222222'><o:p></o:p></span></p><p class=MsoNormal align=center style='margin-bottom:0in;margin-bottom:.0001pt;text-align:center;line-height:normal;background:white'><span style='font-family:"Times New Roman","serif"'>Dr. Pauline Markenscoff</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p><p class=MsoNormal align=center style='margin-bottom:0in;margin-bottom:.0001pt;text-align:center;line-height:normal;background:white'><span style='font-family:"Times New Roman","serif"'>Dr. E. Joe Charlson<o:p></o:p></span></p><p class=MsoNormal align=center style='margin-bottom:0in;margin-bottom:.0001pt;text-align:center;line-height:normal;background:white'><span style='font-family:"Times New Roman","serif"'>Dr. Cumaraswamy Vipulanandan<o:p></o:p></span></p><p class=MsoNormal align=center style='margin-bottom:0in;margin-bottom:.0001pt;text-align:center;line-height:normal;background:white'><span style='font-family:"Times New Roman","serif"'>Dr. Jaspal Subhlok<o:p></o:p></span></p><p class=MsoNormal align=center style='margin-bottom:0in;margin-bottom:.0001pt;text-align:center;line-height:normal;background:white'><span style='font-family:"Times New Roman","serif"'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:justify;line-height:normal'><b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Abstract:<o:p></o:p></span></b></p><p class=MsoNormal style='text-align:justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>In the era of information explosions, the size and complexity of data is expanding dramatically. Numerous applications carrying multimedia data translate into significant bandwidth requirements. A network supporting high bandwidth is important since the application performance and overall customer satisfaction may suffer from network traffic congestion caused by insufficient network resources.<o:p></o:p></span></p><p class=MsoNormal style='text-align:justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>This dissertation aims at solving the current limitations on all-optical network from both switching technology and network architecture aspects. From the perspective of switching technologies, the DWDM Multi-Mode router provides an integrated platform to support three different switching technologies simultaneously. The dynamic reconfiguration capability in DWDM Multi-Mode enables the bandwidth sharing among three switching methods which increases the channel utilization. From the perspective of the applications, the Application-Aware (A<sup>2</sup>) optical network featuring the reverse data path reservation is a good candidate of asymmetric traffic transmission. By creating alternative switching technique towards optical switching network, the A<sup>2 </sup>optical scheduler eliminates the setup latency problem in traditional optical router. At the same time, the path reservation can be changed in real-time, increasing the probability of packets delivery.<o:p></o:p></span></p><p class=MsoNormal style='text-align:justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>The proposed 3-D switching opens another dimension in optical network to reduce traffic blocking. A dynamical resource allocation scheme is proposed to assign bandwidth for different traffic flows. The hardware experiments show the feasibility of the proposed 3-D switching and it is expected to serve as a building block for future optical networks.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>