[Talk] "Photon-phonon interactions for high-capacity coherent optical communications" by Dr. Amol Choudhary in ESB234 at 3pm on 5 Feb. 2018

[OSA IITM]

Greeting from OSA IITM Student Chapter...

OSA-SPIE IITM Student Chapters

cordially invite you to a talk on

Photon-phonon interactions for high-capacity coherent optical communications

​Abstract:-

​​

One of the surprises of nonlinear optics, is that light may interact strongly with sound. Intense laser light literally “shakes” the glass in optical fibres, exciting acoustic waves (sound) in the fibre. Under the right conditions, it leads to a positive feedback loop between light and sound termed “Stimulated Brillouin Scattering,” or simply SBS. This nonlinear photon-phonon interaction can amplify or filter light waves with extreme precision in frequency which makes it uniquely suited to solve key problems in the fields of defence, biomedicine, wireless communications and recently optical communications. We have achieved the first demonstration of SBS in compact chip-scale structures, carefully designed so that the optical fields and the acoustic fields are simultaneously confined and guided.

My talk will introduce this new field and review our progress and achievements, especially in the field of optical communications. At the transmitter-end, an optical frequency comb was regenerated through on-chip Brillouin scattering for 64-level QAM communications. At the receiver-end, low-latency self-homodyne reception was achieved through Brillouin-assisted carrier recovery. This paves the way for application of SBS in telecommunications systems.

About the speaker:-

Amol is an Australian Research Council's (ARC) Discovery Early Career Research Award (DECRA) Fellow in the School of Physics, University of Sydney. He is also the 2018 recipient of the Optical Society's (OSA) Ivan P. Kaminow Outstanding Early Career Professional Prize.

He holds a PhD in Optoelectronics from the Optoelectronics Research Centre (ORC), University of Southampton, UK. After graduating, he received an EPSRC Doctoral Prize fellowship to work on power-scaling of mode-locked waveguide lasers and using graphene in pulsed laser systems. For his DECRA project, he is developing novel on-chip frequency combs for telecom applications.

He serves on the Technical Program Committee of CLEO USA 2018, SPIE Photonics Europe 2018 and SPIE Optics and Photonics 2018.He is also a Guest editor for a special Issue on "Photonic Integration:Recent Advances and Applications" in Applied Sciences.

His research areas of interest are photon-phonon interactions, laser physics, optical communications, integrated optics, non-linear optics, ultrafast optics, microwave photonics, and nonlinear signal processing.

Date: 5 February 2018

Time: 3.00 pm

Venue: Malaviya Hall, ESB 234

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OSA IITM Chapter

FILL Lab, TENET Office

Electrical Engineering

IIT Madras

Chennai- 600036

(P)-044-22575422

(M)-9962749927

Website: http://www.ee.iitm.ac.in/~osaiitm/

[OSA IITM]

Gentle reminder. The talk is at 3:00 PM in ESB 244 and Interactive session just after that.

[OSA IITM]

Sorry, room no is ESB234.

[OSA IITM]

Interactive session is in Malaviya hall itself ESB234 at 4:30 pm. Now.