• Technical Conference: 

    9 - 14 May 2021

  • Exhibition: 

    11 – 13 May 2021

Submit Papers


The extended submission deadline is 22 December 2020 at 12:00 EST (UTC-05:00)

(CLEO will be presented in a hybrid format, a combination of in-person and virtual presentations.)

We recognize that there is uncertainty about what 2021 will bring. To allay your concerns, CLEO guarantees that, if your paper is accepted, we will ensure a platform for it to be presented — whether in-person, virtual or a hybrid of both. You can have confidence that there will be a CLEO audience for your talk or poster.

Present Your Research

Why Choose CLEO?

As a researcher, you have an increasing number of choices when it comes to how and where you present your work.

The committee encourages you to choose their conference as your preferred opportunity.


  • CLEO papers represent the top 1% of meetings downloads in the IEEE Conference Proceedings database.
  • Nearly one-quarter of conference proceedings downloads from OSA Publishing are CLEO papers.
  • More than 4,000 peers and colleagues from 40 countries are expected to attend.

CLEO covers a wide range of science and engineering related to lasers, optics and photonics — your research has a place in this conference. There are 29 topics in which you may submit your research or applications. To encourage optical engineers to submit and potentially present their work, please review a list of representative topic categories and criteria that can make for an appropriate CLEO presentation. 


CLEO supports your research — accepted and presented papers are published in the IEEE Xplore Digital Library and OSA Publishing’s Digital Library, which extends the impact of your work beyond the conference. CLEO further supports the visibility of your work by indexing in Ei Compendex, Google Scholar and Scopus.


CLEO elevates select contributed papers — exceptional research is selected for inclusion in Application & Technology Topical Reviews, Special Symposia or Workshops — special sessions featuring invited presenters who address various aspects of a given topic.


CLEO attracts a distinguished global audience — including top international researchers from the most prestigious institutions.


CLEO offers an unparalleled technical conference and exhibition — as a speaker, you are also an attendee, which means unparalleled access to renowned plenary and invited speakers, international exhibitors and relevant market-based, showfloor programs.


CLEO encourages valuable professional connections — benefit from multiple, meaningful networking opportunities, and connect with leaders in academia and industry on your research

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