Research and design of high-speed advanced analogue front-ends for fibre-optic transmission systems

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dc.contributor.advisor Townsend, Paul D. en
dc.contributor.advisor Ossieur, Peter en Quadir, Nasir Abdul 2015-01-22T17:02:32Z 2015-01-22T17:02:32Z 2014 2014
dc.identifier.citation Quadir, N. A. 2014. Research and design of high-speed advanced analogue front-ends for fibre-optic transmission systems. PhD Thesis, University College Cork. en
dc.identifier.endpage 185
dc.description.abstract In the last decade, we have witnessed the emergence of large, warehouse-scale data centres which have enabled new internet-based software applications such as cloud computing, search engines, social media, e-government etc. Such data centres consist of large collections of servers interconnected using short-reach (reach up to a few hundred meters) optical interconnect. Today, transceivers for these applications achieve up to 100Gb/s by multiplexing 10x 10Gb/s or 4x 25Gb/s channels. In the near future however, data centre operators have expressed a need for optical links which can support 400Gb/s up to 1Tb/s. The crucial challenge is to achieve this in the same footprint (same transceiver module) and with similar power consumption as today’s technology. Straightforward scaling of the currently used space or wavelength division multiplexing may be difficult to achieve: indeed a 1Tb/s transceiver would require integration of 40 VCSELs (vertical cavity surface emitting laser diode, widely used for short‐reach optical interconnect), 40 photodiodes and the electronics operating at 25Gb/s in the same module as today’s 100Gb/s transceiver. Pushing the bit rate on such links beyond today’s commercially available 100Gb/s/fibre will require new generations of VCSELs and their driver and receiver electronics. This work looks into a number of state‐of-the-art technologies and investigates their performance restraints and recommends different set of designs, specifically targeting multilevel modulation formats. Several methods to extend the bandwidth using deep submicron (65nm and 28nm) CMOS technology are explored in this work, while also maintaining a focus upon reducing power consumption and chip area. The techniques used were pre-emphasis in rising and falling edges of the signal and bandwidth extensions by inductive peaking and different local feedback techniques. These techniques have been applied to a transmitter and receiver developed for advanced modulation formats such as PAM-4 (4 level pulse amplitude modulation). Such modulation format can increase the throughput per individual channel, which helps to overcome the challenges mentioned above to realize 400Gb/s to 1Tb/s transceivers. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher University College Cork en
dc.rights © 2014, Nasir Quadir en
dc.rights.uri en
dc.subject Fibre-optic en
dc.subject PAM-4 en
dc.subject VCSEL driver en
dc.subject Emphasis en
dc.subject Automatic gain control en
dc.subject Transimpedance amplifier en
dc.subject CML logic en
dc.subject Linear receiver en
dc.subject Bandwidth extension en
dc.subject High-speed analogue design en
dc.subject Burst mode receiver en
dc.subject Pulse-width distortion en
dc.subject Low power en
dc.subject Deep submicron technology en
dc.subject Data centre en
dc.subject Multi mode fibre en
dc.title Research and design of high-speed advanced analogue front-ends for fibre-optic transmission systems en
dc.type Doctoral thesis en
dc.type.qualificationlevel Doctoral en
dc.type.qualificationname PHD (Engineering) en
dc.internal.availability Full text available en No embargo required en
dc.description.version Accepted Version
dc.contributor.funder Science Foundation Ireland en
dc.description.status Not peer reviewed en Tyndall National Institute en
dc.check.type No Embargo Required
dc.check.reason No embargo required en
dc.check.opt-out Not applicable en
dc.thesis.opt-out false
dc.check.embargoformat Not applicable en
dc.internal.conferring Summer Conferring 2014

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