Advanced integrated spectrometer designs for miniaturized optical coherence tomography systems

B. I. Akca; B. Považay; L. Chang; A. Alex; K. Wörhoff; R. M. de Ridder; W. Drexler; M. Pollnau

doi:10.1117/12.2032504

18 June 2013 Advanced integrated spectrometer designs for miniaturized optical coherence tomography systems

B. I. Akca, B. Považay, L. Chang, A. Alex, K. Wörhoff, R. M. de Ridder, W. Drexler, M. Pollnau

Proceedings Volume 8802, Optical Coherence Tomography and Coherence Techniques VI; 880202 (2013) https://doi.org/10.1117/12.2032504
Event: European Conferences on Biomedical Optics, 2013, Munich, Germany

Abstract

Optical coherence tomography (OCT) has enabled clinical applications that revolutionized in vivo medical diagnostics. Nevertheless, its current limitations owing to cost, size, complexity, and the need for accurate alignment must be overcome by radically novel approaches. Exploiting integrated optics, the central components of a spectral-domain OCT (SD-OCT) system can be integrated on a chip. Arrayed-waveguide grating (AWG) spectrometers with their high spectral resolution and compactness are excellent candidates for on-chip SD-OCT systems. However, specific design-related issues of AWG spectrometers limit the performance of on-chip SD-OCT systems. Here we present advanced AWG designs which could overcome the limitations arising from free spectral range, polarization dependency, and curved focal plane of the AWG spectrometers. Using these advanced AWG designs in an SD-OCT system can provide not only better overall performance but also some unique aspects that a commercial system does not have. Additionally, a partially integrated OCT system comprising an AWG spectrometer and an integrated beam splitter, as well as the in vivo imaging using this system are demonstrated.

Citation Download Citation

B. I. Akca, B. Považay, L. Chang, A. Alex, K. Wörhoff, R. M. de Ridder, W. Drexler, and M. Pollnau "Advanced integrated spectrometer designs for miniaturized optical coherence tomography systems", Proc. SPIE 8802, Optical Coherence Tomography and Coherence Techniques VI, 880202 (18 June 2013); https://doi.org/10.1117/12.2032504

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available