Publication

Performances of endoscopic holography with a multicore optical fiber

Christian Depeursinge
1995
Journal Articles

Abstract

A holographic setup that involves the use of a multicore optical fiber as an in situ recording medium has been developed. The hologram is transmitted to a CCD camera for electronic processing, and the image is reconstructed numerically, providing more flexibility to the holographic process. The performances of this imaging system have been evaluated in terms of the resolution limit and robustness relative to noise. The experimental cutoff frequency has been measured experimentally over a range of observation distances 14–10 mm2 and presents a very good agreement with the predictions made by simulation. The system features a resolution of 5-µm objects for a 4-mm observation distance. The different sources of noise have been analyzed, and their influence on resolution has been proved to be nonrelevant.

Official source

https://infoscience.epfl.ch/entities/publication/cf2a2423-1014-46cd-8b1a-7313e8a8c0ed

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Christian Depeursinge
1995
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/cf2a2423-1014-46cd-8b1a-7313e8a8c0ed

About this result

Related concepts (32)

Holography

Holography is a technique that enables a wavefront to be recorded and later re-constructed. Holography is best known as a method of generating real , but it also has a wide range of other applications. In principle, it is possible to make a hologram for any type of wave. A hologram is made by superimposing a second wavefront (normally called the reference beam) on the wavefront of interest, thereby generating an interference pattern which is recorded on a physical medium.

Image resolution

Image resolution is the level of detail an holds. The term applies to digital images, film images, and other types of images. "Higher resolution" means more image detail. Image resolution can be measured in various ways. Resolution quantifies how close lines can be to each other and still be visibly resolved. Resolution units can be tied to physical sizes (e.g. lines per mm, lines per inch), to the overall size of a picture (lines per picture height, also known simply as lines, TV lines, or TVL), or to angular subtense.

Professional video camera

A professional video camera (often called a television camera even though its use has spread beyond television) is a high-end device for creating electronic moving images (as opposed to a movie camera, that earlier recorded the images on film). Originally developed for use in television studios or with outside broadcast trucks, they are now also used for music videos, direct-to-video movies (see digital movie camera), corporate and educational videos, wedding videos, among other uses.

Related publications (32)

Performances of endoscopic holography with a multicore optical fiber

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