Photonics West Exhibition opens Tuesday
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25 - 30 January 2025
San Francisco, California, US
Conference 13305 > Paper 13305-104
Paper 13305-104

Few-mode OCT with a four-mode-selective photonic lantern for multiple illumination and detection pairs

26 January 2025 • 5:30 PM - 7:00 PM PST | Moscone West, Room 2003 (Level 2)

Abstract

Few-mode optical coherence tomography (FM-OCT) is an extension of OCT that exploits higher-order propagation modes to provide new contrast imaging through a mode-selective photonic lantern (MSPL). MSPLS allows efficient multiplexing and demultiplexing mode generation that is lossless (0.5dB}) and has high modal isolation (30dB). A novel four-mode photonic lantern at 1300nm highlights structural differences depending on the scatter size and a different speckle contrast depending on the illumination and detection. To our knowledge, this is the first FM-OCT that implements higher-order modes for illumination and detection, which paves the way for scattering analysis, efficient photon collection, or even speckle reduction.

Presenter

Polytechnique Montréal (Canada), Castor Optics, Inc. (Canada)
Rodrigo Becerra did his bachelor's degree in physics, where he was involved in different projects related to interferometry and fiber optics lasers. He holds an MSc in optics from INAOE and did his thesis at ICFO, where he worked with photonic lanterns in microscopy. Currently, he is a Ph.D. candidate at Polytechnique Montreal, and his work involves the fabrication of photonic lanterns and their implementation in novel OCT systems; he also works at Castor Optics in the research and development of new optical fiber devices.
Presenter/Author
Polytechnique Montréal (Canada), Castor Optics, Inc. (Canada)
Author
Raphael Maltais-Tariant
Polytechnique Montréal (Canada)
Author
Polytechnique Montréal (Canada)
Author
Polytechnique Montréal (Canada), Castor Optics, Inc. (Canada)
Author
Polytechnique Montréal (Canada), Castor Optics, Inc. (Canada)