Excited to share our new manuscript: Low-cost passive single-shot ultrafast imaging at 685 Gfps We demonstrate a fully passive, computation-free ultrafast imaging system built from off-the-shelf components, with 1.46 ps sampling, 10 frames, and cost below $500. Paper: arxiv.org/abs/2604.27898

New manuscript alert! 🚨 We’ve developed a surrogate workflow for designing complex optical neural networks. By shifting the heavy lifting into matrix space, we can optimize deep architectures without the usual end-to-end computational grind. arxiv.org/abs/2604.21301

Our new manuscript! We’ve developed a resolution-agnostic approach to lensless imaging using Fourier Neural Operators. Instead of retraining for every different resolution, our model learns the underlying operator to handle multiple scales with ease. arxiv.org/abs/2604.16295

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.5...

New preprint out! 🎉 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 @spie.org Photonics West 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). tubitak.gov.tr/en/announcem...

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.

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—rare extreme optical pulses—can be engineered via modal excitation in multimode Si₃N₄ waveguides. arxiv.org/abs/2510.07082

I am recruiting a postdoc to work experimentally in my group @astonphotonics.bsky.social on electro-optic frequency combs for microscopy applications! If you are interested please write me! You find more details here 👇👇👇 jobs.aston.ac.uk/Vacancy.aspx...

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.

Our recent preprint “Spatiotemporal Nonlinear Pulse Dynamics in Multimode Silicon Nitride Waveguides” now on arXiv! Dive into the details here arxiv.org/abs/2508.18945

Our new paper is out in Communications Physics of Nature Portfolio! We present a genetically programmable optical random neural network, combining optical computing with adaptive control for efficient machine learning. doi.org/10.1038/s420...

Good morning! Morning walk at 6:30

We just published Fiber-D2NN in Optics Letters! This optical computer works by tuning linear mode coupling inside multimode fiber. It enables simple-readout or all-optical inference and reaches competitive accuracy on BreastMNIST, FashionMNIST & RSSCN7. doi.org/10.1364/OL.5...

We have received a TÜBİTAK 1001 grant to elevate our AI for Optics research to the field of Quantum. With our “Unscrambling quantum light in scattering media with artificial neural networks” project, we will teach neural networks to “see”quantum light through messy environments.

We have received a TÜBİTAK 1001 grant to elevate our AI for Optics research to the field of Quantum. With our “Unscrambling quantum light in scattering media with artificial neural networks” project, we will teach neural networks to “see”quantum light through messy environments.

Very sad to hear that the great soliton pioneer Akira Hasegawa has died on June 22. His work truly was revolutionary in so many ways and impacted so many different fields. An obituary from Columbia is below. www.apam.columbia.edu/memoriam-pro...

After SPIE conference at San Diego, we visited UCLA and Caltech. We had the chance to get lab tours from Prof. Aydogan Ozcan and Prof. Alireza Marandi. It was truly inspiring to see their groundbreaking research and enjoy such generous hospitality!

Conference selfie with my students #SPIEOpticsPhotonics

Greetings from San Diego! It was a pleasure to present my invited talk at the Emerging Topics in AI conference, SPIE Optics + Photonics this week. I shared our recent optical computing architectures. @spie.org #SpieOpticsPhotonics

Next week at ETAI conference of @spie.org Optics + Photonics, our Lab. of Photonic Techs will be in San Diego with 6 talks and 1 posters. We are excited to share our recent works on Optics for AI and AI for optics!

From Beyoğlu to entrance of Bosphorus. Right side you can see that Hagia Sophia is under restoration

Greetings from Berlin! Today I will be giving an invited talk about our recent studies on optical computing at IEEE Summer Topicals.

Since I am out of town for conferences, my team made a surprise birthday for me previous week. I wasn’t expecting it and it was total surprise for me!

Greetings from Marseille! Today I will be giving an invited talk on our recent studies about optical computing with waveguides at Optica Advanced Photonics Congress

Our students, Yaren and Bahadır, did an amazing job presenting our talks and posters at #CLEOEurope

Next week at #CLEOEurope 2025, our Lab. of Photonic Techs will be in Munich with 3 talks and 2 posters. We are excited to share our recent works on optical computing and ultrafast imaging!

Morning walk at Bosphorus. We completed an 8 km path!

Today at my lab, LPT, we are having fun with dyes

Our study with EPFL, published in Advanced Photonics, has been selected as the best paper of 2024. spie.org/news/advance...

Happy International Day of Light! #lightday2025

Meet @utegin.bsky.social who will take part in ETAI 2025. Dr. Uğur Teğin, Assistant Professor at Koç University and PI of the Laboratory of Photonic Technologies, specializes in nonlinear optics, optical computing, and ultrafast imaging. He holds a PhD from EPFL and completed a postdoc at Caltech.

Happy to share our latest preprint: “Fiber-based Diffractive Deep Neural Network”! This optical computing system uses a fiber with tunable diffraction that excels in biomedical disease, fashion, and geospatial classification tasks & can perform all-optical computing too! arxiv.org/abs/2502.11885

Paper alert! I am happy to share our recent study on nonlinear photonic neural networks in Nanophotonics! We explore the impact of optical chaos on optical computing with fibers. doi.org/10.1515/nano...

We had a chance to share our recent works on photonic neural networks at #PhotonicsWest @spie.org

Greetings from San Francisco!

We completed the semester for EEE 206 Electromagnetics 🎉

2025 is off to an incredible start! In the first two days of the year, two of our manuscripts have been accepted. Here’s to a productive year ahead! 🎉