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Microresonator combs for coherent optical communications

Attila Fülöp (Institutionen för mikroteknologi och nanovetenskap, Fotonik)
Göteborg : Chalmers University of Technology, 2016. - 74 s.
[Licentiatavhandling]

This thesis covers the study of microresonator-based optical frequency combs for use in coherent optical communication links. Current links typically utilize several free-running lasers to achieve wavelength-division multiplexing (WDM). Having an integrated frequency comb as a source instead could potentially simplify the transmitter while at the same time open up new possibilities on the digital signal processing (DSP) side in the receiver. The thesis goes into some detail to describe what requirements there are on the combs to be useful for this application. Specifically the power per line and related flatness is analyzed. Additionally a large part of the thesis is dedicated to describe the working principle of microresonators. The linear low-power regime is described in detail while a simple Lugiato-Lefever model is analyzed for the nonlinear high-power regime. The appended papers describe two different microresonators with different initialization mechanisms; one where the dispersion is locally tuned using higher order modal interactions while the second one is seeded with three coherent pump waves. The first paper demonstrates that such combs fulfill the criteria for being light sources in long-haul communication systems. This is demonstrated by using it to send data over a more than 6000 km long transmission link.

Nyckelord: Fiber-optic communication, integrated optics devices, nonlinear optics, four-wave mixing, microresonators



Denna post skapades 2016-08-01. Senast ändrad 2016-08-08.
CPL Pubid: 239678

 

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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Fotonik

Ämnesområden

Informations- och kommunikationsteknik
Nanovetenskap och nanoteknik
Optik
Kommunikationssystem
Datatransmission
Fotonik
Nanoteknik

Chalmers infrastruktur

Relaterade publikationer

Inkluderade delarbeten:


Triply resonant coherent four-wave mixing in silicon nitride microresonators


Long-haul coherent transmission using a silicon nitride microresonator-based frequency comb as WDM source


Examination

Datum: 2016-08-26
Tid: 10:00
Lokal: Kollektorn
Opponent: Prof. Sergei Popov, School of Communication and Information Technology, Royal Institute of Technology, Sweden

Ingår i serie

Technical report MC2 - Department of Microtechnology and Nanoscience, Chalmers University of Technology 1652-0769