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.
|Title of host publication||Optical fibers and sensors for medical diagnostics and treatment applications XIV|
|Place of Publication||Bellingham, WA (US)|
|Number of pages||8|
|Publication status||Published - 20 Feb 2014|
|Event||Optical fibers and sensors for medical diagnostics and treatment applications XIV - San Francisco, CA, United States|
Duration: 1 Feb 2014 → 2 Feb 2014
|Name||Progress in biomedical optics and imaging|
|Conference||Optical fibers and sensors for medical diagnostics and treatment applications XIV|
|City||San Francisco, CA|
|Period||1/02/14 → 2/02/14|
Bibliographical noteStefan 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.
- cost-effective spectrometer
- miniaturized spectrometer
- OCT spectrometer
- optical coherence tomography
- spectrometer approach
- TFBG spectrometer
- tilted fiber Bragg grating