Uğur Teğin

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

Multimode fiber laser cavities as nonlinear optical processors Optical computing provides a promising path toward energy-efficient machine learning, yet implementing nonlinear transformations without complex electronics or high-power sources remains challenging. ...

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

Self-optimizing multichannel optical computing Optical computing offers ultrafast, energy-efficient alternatives to conventional digital processors, yet most implementations remain confined to single-channel processing, severely underutilizing lig...

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!

Optical Spiking Neural Networks via Rogue-Wave Statistics Optical computing could reduce the energy cost of artificial intelligence by leveraging the parallelism and propagation speed of light. However, implementing nonlinear activation, essential for machin...

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

The role of modes in nonlinear fiber optical computing We investigate the nonlinear propagation of light in graded-index multimode fiber, utilizing it as an optical computing unit, and quantify how it employs waveguide modes to process information. Using ...

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.

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.

Engineering Rogue Waves via Multimode Interactions in Integrated Waveguides We explore rogue wave formation in multimode silicon nitride (Si$_3$N$_4$) waveguides with multimode nonlinear Schrödinger equation-based simulations. Pure fundamental-mode excitation produces smooth ...

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

Job Vacancy at Aston University: Postdoctoral Research Associate We are hiring a postdoctoral research associate at the Aston Institute of Photonic Technologies (AIPT), that will join the group of Dr. Auro Perego. You will perform experimental and numerical simulat...

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.

Spatiotemporal Nonlinear Pulse Dynamics in Multimode Silicon Nitride Waveguides We present an open-source multimode nonlinear Schrödinger equation-based simulation to investigate spatiotemporal nonlinear pulse propagation in thin-film silicon nitride (SiN) waveguides. Using this ...

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

Genetically programmable optical random neural networks - Communications Physics Optics offers highly parallelized and energy-efficient computations, making it suitable for answering the ever-increasing demands of artificial intelligence systems. Here, the authors demonstrate a pr...

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

Fiber-based diffractive deep neural network Optical computing has reemerged as a promising alternative computing paradigm for providing energy-efficient information processing in the age of artificial intelligence. Among various photonic neural...

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