Integrated optical coherence chromatographic imaging and laser inducing fluorescent-spectrum single optical fiber endoscopy system

A technology of laser-induced fluorescence and coherence tomography, which is used in the coupling of optical waveguides, optics, endoscopy, etc., can solve the problem of inability to simplify the system, achieve simplified design and production, improve stability and reliability, and reduce interference. Effect

Inactive Publication Date: 2008-03-26
ZHEJIANG UNIV
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Problems solved by technology

No intrinsic system simplification due to no reduction in fiber count

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  • Integrated optical coherence chromatographic imaging and laser inducing fluorescent-spectrum single optical fiber endoscopy system
  • Integrated optical coherence chromatographic imaging and laser inducing fluorescent-spectrum single optical fiber endoscopy system

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[0026] The present invention will be further explained below in conjunction with the drawings and embodiments:

[0027] In Figures 1 and 2, the present invention includes a light source unit 1, an optical fiber interferometer 2, a double-clad fiber coupling unit 3, an endoscopic probe unit 4, a LIF signal acquisition and processing unit 5, an OCT signal acquisition and processing unit 6 and Computer unit 7; the first single-mode fiber coupler 13 in the light source unit 1 is connected to the first port of the second single-mode fiber coupler 13 in the fiber interferometer 2 via the single-mode fiber 8, and the double-clad fiber coupling unit 3 The fusion splice point 15 is connected to the second port of the second single-mode fiber coupler 13 in the fiber interferometer 2 via the single-mode fiber 8, and the first port of the double-clad fiber coupler 17 in the double-clad fiber coupling unit 3 The second port of the double-clad fiber coupler 17 is connected to the long-wave pass...

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Abstract

The present invention discloses a single optical fiber endoscopic system integrating optical coherent tomography (OCT) and laser induced fluorescence spectrum (LIF). It is characterized by that said invention adopts wavelength division multiplex technique of optical fiber and utilizes the working waveband difference of OCT and LIF two diagnosis modes and double-mode characteristics of doubly-claded optical fiber to implement integration of single optical fiber endoscopic system of OCT and LIF. At the same time of that the fiber core mode provides single-mode transmission channel for OCT diagnosis mode it also can be used as transmission channel of fluorescence exciting light, and the inner cladding mode can provide transmission channel for fluorescence signal. The doubly-cladded optical fiber coupler can make the fluorescence signal be separated out from inner cladding of doubly-cladded optical fibre, so that the fluorescence spectrum measurement can be implemented.

Description

Technical field [0001] The invention relates to optical coherence tomography and laser-induced fluorescence spectroscopy diagnosis technology, in particular to a single-fiber endoscope system integrating optical coherence tomography and laser-induced fluorescence spectroscopy. Background technique [0002] Developed in recent years, the optical biopsy method for diagnosing human tissue lesions has become a major application of modern optical technology. The practical techniques of optical biopsy include tissue spectrum diagnosis and imaging diagnosis. Compared with traditional diagnosis methods, its advantages are mainly: (1) Reduce or even abandon the biopsy of suspected tissues, thereby reducing the pain of the patient; (2) In the tissue In the case of unobvious structural abnormalities, the biopsy operation can be effectively guided; (3) During the clinical operation, the boundary of the diseased tissue can be judged. [0003] Optical Coherence Tomography (OCT) is a tomography...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/05G02B23/24G02B6/255G02B6/26
Inventor 王凌丁志华何梓昂杨亚良
Owner ZHEJIANG UNIV
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