Cost-effective optical coherence tomography spectrometer based on a tilted fiber Bragg grating


A compact, fiber-based spectrometer for biomedical application utilizing a tilted fiber Bragg grating (TFBG) as integrated dispersive element is demonstrated. Based on a 45° UV-written PS750 TFBG a refractive spectrometer with 2.06 radiant/μm dispersion and a numerical aperture of 0.1 was set up and tested as integrated detector for an optical coherence tomography (OCT) system. Featuring a 23 mm long active region at the fiber the spectrum is projected via a cylindrical lens for vertical beam collimation and focused by an achromatic doublet onto the detector array. Covering 740 nm to 860 nm the spectrometer was optically connected to a broadband white light interferometer and a wide field scan head and electronically to an acquisition and control computer. Tomograms of ophthalmic and dermal samples obtained by the frequency domain OCT-system were obtained achieving 2.84 μm axial and 7.6 μm lateral resolution.

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Divisions: College of Engineering & Physical Sciences > Electrical, Electronic & Power Engineering
College of Engineering & Physical Sciences > Aston Institute of Photonics Technology
Additional Information: Stefan Remund ; Anke Bossen ; Xianfeng Chen ; Ling Wang ; Adedotun Adebayo ; Lin Zhang ; Boris Považay and Christoph Meier. "Cost-effective optical coherence tomography spectrometer based on a tilted fiber Bragg grating", Proc. SPIE 8938, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIV, 89381E (February 20, 2014). Copyright 2014 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. DOI:
Event Title: Optical fibers and sensors for medical diagnostics and treatment applications XIV
Event Type: Other
Event Dates: 2014-02-01 - 2014-02-02
Uncontrolled Keywords: cost-effective spectrometer,miniaturized spectrometer,OCT spectrometer,optical coherence tomography,spectrometer approach,TFBG spectrometer,tilted fiber Bragg grating,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biomaterials,Radiology Nuclear Medicine and imaging
ISBN: 978-0-8194-9851-9
Full Text Link: http://proceedi ... ticleid=1833926
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2014-02-20
Authors: Remund, Stefan
Bossen, Anke
Chen, Xianfeng
Wang, Ling
Adebayo, Adedotun
Zhang, Lin (ORCID Profile 0000-0002-1691-5577)
Považay, Boris
Meier, Christoph



Version: Accepted Version

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