Optical coherence tomography application by using optical phase shift based on fiber optic sensor
| Autor: | Joo Ha Kim, Tae Joong Eom, Seung Suk Lee, Eun Seo Choi |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry Optical cross-connect Astrophysics::Instrumentation and Methods for Astrophysics Physics::Optics Polarization-maintaining optical fiber 02 engineering and technology Optical time-domain reflectometer 01 natural sciences Graded-index fiber law.invention 010309 optics Interferometry 020210 optoelectronics & photonics Optics Fiber optic sensor law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Fiber optic splitter business Optical attenuator |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.2212925 |
| Popis: | We demonstrate fiber-optic sensor applications to full-range complex optical coherence tomography (OCT). To extend imaging range in OCT, real value or interferogram measured from an interferometer is needed to convert into complex value. For the purpose, various treatments such as mechanical, electro-optical, optical and programming based methods have been exploited in the interferometer. To make complex signal in fiber-optic interferometer, we propose vibrationbased optical phase shifting method. The proposed method utilizes optical fiber sensors that are for the detection of vibration using optical fiber. When coiled fiber was exposed to vibration, interferogram presents fringe shift without periodicity variations, which means that vibration induces phase shift in the interferometer. Therefore, intentionally generated vibration could be applicable to controlling of the optical phase shift and retrieval of the complex signal. As a result, the vibrations applied to coiled fiber were able to remove mirror image in Fourier domain. This result proved the feasibility of the proposed method on the extending of optical imaging range. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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