Fiber optically integrated cost-effective spectrometer for optical coherence tomography

Part of book or chapter of book English OPEN
Remund, Stefan ; Bossen, Anke ; Chen, Xianfeng ; Wang, Ling ; Zhang, Lin ; Považay, Boris ; Meier, Christoph (2014)
  • Publisher: SPIE
  • Subject:
    arxiv: Physics::Optics | Physics::Medical Physics
    mesheuropmc: genetic structures

A tilted fiber Bragg grating (TFBG) was integrated as the dispersive element in a high performance biomedical imaging system. The spectrum emitted by the 23 mm long active region of the fiber is projected through custom designed optics consisting of a cylindrical lens for vertical beam collimation and successively by an achromatic doublet onto a linear detector array. High resolution tomograms of biomedical samples were successfully acquired by the frequency domain OCT-system. Tomograms of ophthalmic and dermal samples obtained by the frequency domain OCT-system were obtained achieving 2.84 μm axial and 10.2 μm lateral resolution. The miniaturization reduces costs and has the potential to further extend the field of application for OCT-systems in biology, medicine and technology.
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