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Related Experiment Video

Updated: Jun 1, 2026

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy (oSLO) and Optical Coherence Tomography (OCT)

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy (oSLO) and Optical Coherence Tomography (OCT)

Published on: August 4, 2018

Simultaneous dual-wavelength-band common-path swept-source optical coherence tomography with single polygon mirror

Youxin Mao¹, Shoude Chang, Erroll Murdock

¹Institute for Microstructural Sciences, National Research Council Canada, 1200 Montreal Road, Ottawa, ON K1A 0R6, Canada. linda.mao@nrc‐cnrc.gc.ca

|June 3, 2011

Summary

We developed a novel dual-band swept-source optical coherence tomography (SS-OCT) system. This technology enables simultaneous 1310/1550 nm imaging for high-speed, in vivo functional investigations.

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Published on: October 2, 2021

Area of Science:

Biomedical Optics
Optical Imaging
Medical Technology

Background:

Optical Coherence Tomography (OCT) is a powerful non-invasive imaging modality.
Dual-wavelength OCT offers enhanced contrast and functional information.
Existing systems often face limitations in speed and complexity.

Purpose of the Study:

To develop a novel simultaneous dual-band swept-source optical coherence tomography (SS-OCT) system.
To enable high-speed, in vivo imaging at two distinct wavelengths (1310 nm and 1550 nm).
To explore potential applications in functional spectroscopic investigations.

Main Methods:

A novel simultaneous 1310/1550 nm two-wavelength band swept laser source was engineered.
Synchronized dual-wavelength tuning was achieved using two laser cavities and a single scanner.
Broadband wavelength-division multiplexing coupled the two wavelengths into a common-path fiber probe for dual-band SS-OCT.

Main Results:

Simultaneous swept-source laser operation at 1310 nm (1227-1387 nm) and 1550 nm (1519-1581 nm) was demonstrated.
Average output powers of 60 mW (1310 nm) and 27 mW (1550 nm) were achieved.
High-speed A-scan rate of 65 kHz was maintained for simultaneous dual-band imaging.

Conclusions:

A novel dual-band common-path SS-OCT system was successfully developed.
The system enables simultaneous high-speed imaging at 1310 nm and 1550 nm.
This technology holds significant potential for advanced in vivo functional and spectroscopic imaging applications.