Microresonator combs for coherent optical communications
Licentiatavhandling, 2016

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.

Fiber-optic communication

nonlinear optics

integrated optics devices

four-wave mixing

microresonators

Kollektorn
Opponent: Prof. Sergei Popov, School of Communication and Information Technology, Royal Institute of Technology, Sweden

Författare

Attila Fülöp

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

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

Conference on lasers and electro-optics (CLEO), San Jose, USA,; (2016)p. SM4F.2-

Paper i proceeding

Triply resonant coherent four-wave mixing in silicon nitride microresonators

Optics Letters,; Vol. 40(2015)p. 4006-4009

Artikel i vetenskaplig tidskrift

Styrkeområden

Informations- och kommunikationsteknik

Nanovetenskap och nanoteknik

Ämneskategorier

Telekommunikation

Atom- och molekylfysik och optik

Kommunikationssystem

Nanoteknik

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

Kollektorn

Opponent: Prof. Sergei Popov, School of Communication and Information Technology, Royal Institute of Technology, Sweden

Mer information

Skapat

2017-10-07