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Patent

Mach-zehnder interferometer and method of manufacturing the same

About: The article was published on 2015-03-21. It has received None citations till now. The article focuses on the topics: Mach–Zehnder interferometer.
References
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Patent
11 Jan 2007
TL;DR: In this paper, the air-holes of a microstructured fiber are intentionally collapsed in the vicinity of the splices and this broadens the propagating optical mode, allowing coupling from core to cladding modes, indicating predominant interference between the fundamental core mode and a cladding mode.
Abstract: A compact and stable interferometer is easily built only with fusion splices. The air-holes of a microstructured fiber are intentionally collapsed in the vicinity of the splices and this broadens the propagating optical mode, allowing coupling from core to cladding modes. The transmission spectrum is sinusoidal and of single frequency, indicating predominant interference between the fundamental core mode (7) and a cladding mode (6). A regular interference spectrum can be observed from 650 nm to 1600 nm with fringe visibility reaching 80%. The fringe spacing is inversely proportional to the distance between the splices. This behaviour has a significant impact in optical sensing and communications and so the interferometer can be applied for strain sensing. The device comprises two splices (5) of a microstructured optical fiber (1), said splices (5) determining two regions in which the air-holes (4) are collapsed, separated a length (L) along which said two modes are excited.

7 citations

Patent
08 Dec 2010
TL;DR: In this paper, the authors presented a method for producing a Mach-Zehnder filtering device using an optical fiber having a jacket and a core containing rare earth element dopants, where the core exists in both the first and the second necks.
Abstract: The present invention provides a method for producing a Mach-Zehnder filtering device. The method includes the following steps: (a) providing an optical fiber having a jacket and a core containing rare earth element dopants; (b) stripping the jacket of a segment of the optical fiber; and (c) performing a fused-tapering to the stripped segment of the optical fiber to form a first and a second necks simultaneously, wherein the core exists in both the first and the second necks to form a Mach-Zehnder interferometer.

5 citations

Proceedings ArticleDOI
19 Apr 2012
TL;DR: Mach-Zehnder fiber interferometers based on the liquid-filled photonic crystal fibers are demonstrated and applied in the sensing applications of surrounding refractive index and bending.
Abstract: Mach-Zehnder fiber interferometers based on the liquid-filled photonic crystal fibers are demonstrated and applied in the sensing applications of surrounding refractive index and bending. The sensing sensitivities of the fabricated interferometers are measured and discussed.

4 citations