|Title:||All-optical packet switching with all-optical header processing using fabry-perot laser diode|
|Subject:||Hong Kong Polytechnic University -- Dissertations.|
Packet switching (Data transmission)
|Department:||Department of Electronic and Information Engineering|
|Pages:||xvii, 162 p. : ill. ; 30 cm.|
|Abstract:||In this work, we present recent results in all-optical packet switching, in which both header processing and packet routing are carried out in optical domain using multi-wavelength injection locking of a Fabry-Perot laser diode. First, by using a novel self-routing address format for the data packets and a special two-intensity level control signal, we demonstrated all-optical header processing and packet control signal generation with a single Fabry Perot laser diode (FP-LD). In the self-routing address scheme, each output port of all the nodes in a network is associated with a bit in the header address. Using this routing scheme, the header processing unit in a node of a network is only required to process the header bits of the incoming data packet that are associated with its output port. The special two-intensity level control signal can be generated by using two Mach-Zehnder intensity modulators and two pulse pattern generators. We also found that the relaxation oscillation of a directly current modulated DFB laser diode can be used as the special control signal. We then demonstrated that a single Fabry-Perot laser diode can simultaneously serve as an all-optical on-off switch and as all-optical header processor. The demonstrated header rate is 5 Gb/s and the payload rate is 10 Gb/s. However, because of the format of the address and the finite response time of the Fabry-Perot laser diode, part of the header bits of the "unwanted" data packets are able to pass through the FP-LD, thus limiting the cascadability of the switch. In order to eliminate the residual header bits problem when a single FP-LD is used, we used a two-stage implementation which uses a FP-LD as the header processor only and execute the packet switching at a separate stage. We also demonstrated an all-optical add-drop node which can be used to construct an all-optical packet switched networks. Finally, we successfully demonstrated all-optical packet switching using optical 2R regeneration after the optical signal is transmitted through 100 km of optical fiber.|
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item: