Optica will be performing scheduled maintenance on Wednesday (8 October) beginning at 17:00 ET. We apologize for any inconvenience this may cause. Thank you for your patience as we improve our services.


If you need assistance, Customer Service can be reached at +1 202.416.1907 (Worldwide) +1 800.766.4672 (US/Canada) or by emailing us at custserv@optica.org. Customer Service is available from 08:30 to 18:00 ET, Monday through Friday.

Virtual Day: 22 October 2025
Technical Conference: 26 - 30 October 2025
Exhibition: 28 - 29 October 2025
Colorado Convention Center | Denver, Colorado, USA

Virtual Day: 22 October 2025
Technical Conference: 26 - 30 October 2025
Exhibition: 28 - 29 October 2025
Colorado Convention Center | Denver, Colorado, USA

The Meeting Format

FiO LS is one conference, offered in two formats: In-Person (26 - 30 October) and Virtual (22 October). Registrants may participate in either - or both. All technical sessions are recorded and available on demand for up to 60 days after the event concludes.

Explore the Conference Themes

New in 2025: Space Optics

The Space Optics Theme is new to 2025. Learn about advancements in developing robust space-based optical systems.

Machine Learning

Discover historical retrospectives and future views on emerging machine learning techniques in optics and photonics.

Virtual Reality and Augmented Vision

A gateway to learning about unique optical challenges for displays.

Quantum Technologies

Explore the latest developments of quantum technologies.