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

Author Timeline

24 June 2025
12:00 noon EDT (UTC-04:00)
Abstract and Summary Submission Deadline
Contributed Papers and Posters
25 July 2025 Authors of FiO LS contributed submissions are notified of acceptance/rejection
25 July 2025
12:00 noon EDT (UTC-04:00)
Abstract and Summary Submission Deadline
Extended Posters Only Submissions
12 August 2025 Authors of extended poster submissions are notified of acceptance/rejection
07 October 2025
12:00 noon EDT (UTC-04:00)
Abstract and Summary Submission Deadline
Postdeadline Papers
17 October 2025 Authors of Postdeadline Paper submissions are notified of acceptance/rejection
26-30 October 2025 FiO LS is held in person in Denver, Colorado, USA.
Prerecorded, on-demand presentations are offered as archived video recordings.