Ugur Tegin

My PhD studies in EPFL, started with a cover and ended with another cover.

Our paper is published today in Optics Letters’s new issue. I would like to congratulate our undergraduate student Firdevs Yüce and PhD student Bora Carpinlioglu 🎉 doi.org/10.1364/OL.587…

We show that multimode optical fibers can naturally implement recurrent neural networks through passive light propagation. Just light recirculating through a fiber loop, generating fading memory states via interference and nonlinear dynamics. 📄 arxiv.org/abs/2602.19246

This semester, I am teaching EEE 452/552 Neuromorphic and Physics-Inspired Computing to 4th year undergraduate / graduate students at Koç University!

Our new manuscript: “Multimode fiber laser cavities as nonlinear optical processors.” CW multimode fiber-laser cavities act as compact, low-power nonlinear processors for optical computing—high accuracy with a simple linear readout. arxiv.org/abs/2602.09519

Kıtır Efendi’s contribution to our work: - Let me check how is the manuscript? - Ok good to go!

Greetings from San Francisco! It is good to be back at Photonics West. We will be giving our talks on January 20th and 21st. You can find us in the “Photonic AI accelerators,” “Photonic Neural Network I & II,” and “Diffractive Optical Processors” sessions. #PhotonicsWest

New manuscript: "Self-optimizing multichannel optical computing" 🎉 Most optical AI wastes multichannel information. We don't. Light does the computing. The system optimizes itself. arXiv: arxiv.org/abs/2601.07574

Next week, we are heading to San Francisco for @PhotonicsWest to showcase our latest work. With my grad students, we are attending to present 6 talks and 2 posters. Check the attached schedule for times and room numbers in Moscone West. Congratulations to my team!

New year, new manuscript 🎉 Our new manuscript introduces an optical spiking neural network that exploits rogue-wave statistics as a passive nonlinear activation mechanism for energy-efficient optical computing. arXiv: arxiv.org/abs/2512.24983

Happy new year! Our current view of the campus

Excited to share our latest preprint “The role of modes in nonlinear fiber optical computing”. We show that fiber optical computation does not use all supported modes but instead emerges in a low-dimensional, task-dependent modal subspace. arxiv.org/abs/2512.10035

Our new graduate students have joined the team, and we’ve refreshed our lab website with an updated group photo. Take a look: lpt.ku.edu.tr/people.html

Exciting news! Our project, “Multiphoton Imaging System with Spatiotemporal Fiber Lasers for Real-Time Optical Biopsy,” has been selected as one of seven projects funded under the Turkish–Italian Bilateral Cooperation Programme (TÜBİTAK–MAECI).

Greetings from Denver, CO! This year, I am attending Frontiers in Optics with my PhD student Bora Carpinlioglu. Both of us delivered our talks today. Now, we can enjoy the rest of the conference.

By exciting higher-order or multimode superpositions, we uncover heavy-tailed statistics with bursts beyond the 8σ threshold. This opens a new degree of freedom for tailoring nonlinear instabilities on-chip platforms.

Excited to share our latest preprint “Engineering Rogue Waves via Multimode Interactions in Integrated Waveguides” now on arXiv! In this study, we show that rogue waves can be engineered via modal excitation in multimode waveguides. arxiv.org/abs/2510.07082

On this #WelcomeNewEditorsWednesday, we'd like to welcome our incoming #OPG_OpEx Associate Editors Travis Sawyer, @uarizona and Uğur Teğin, @u_tegin Thank you for supporting @OpticaPubsGroup and in particular Optics Express!

It’s not fancy, but it marks a special moment for us . We coupled light into our first in-house fabricated chip! Next time we will take fancy pictures with neon colors :)

On my way back to NYC, I visited Cornell and shared our recent studies with colleagues. I had great discussions with Frank Wise, Nicholas Rivera, and Peter McMahon, enjoyed inspiring lab tours, and appreciated the warm hospitality of the Wise group.

Had a great time visiting Corning and giving a talk! It was inspiring to meet brilliant scientists and see their cutting-edge production and scientific innovations firsthand.