论文信息 - Twin core photonic crystal fiber for in-line Mach-Zehnder interferometric sensing applications.

Twin core photonic crystal fiber for in-line Mach-Zehnder interferometric sensing applications.

We will discuss fabrication of twin core photonic crystal fiber (TC-PCF) using the stack-and-draw method and its application for in-line Mach-Zehnder interferometers. The small difference in the effective indexes of the two core modes leads to interference fringes and the birefringence of the twin cores results in polarization-dependent fringe spacing. The strain sensitivity was negative and wavelength-dependent. A novel intensity-based bend sensor is also demonstrated with bend-induced spatial fringe shift. High air filling fraction of fabricated TC-PCF cladding provides immunity to bend-induced intensity fluctuation.

[1] T A Birks,et al. Group-velocity dispersion in photonic crystal fibers. , 1998, Optics letters.

[2] Byeong Ha Lee,et al. Photonic crystal fiber interferometer composed of a long period fiber grating and one point collapsing of air holes. , 2008, Optics letters.

[3] W. Jin,et al. Design and modeling of a photonic crystal fiber gas sensor. , 2003, Applied optics.

[4] P. Russell,et al. Photonic Crystal Fibers , 2003, Science.

[5] Chang-Seok Kim,et al. Simultaneous measurement of temperature and strain using dual long-period fiber gratings with controlled temperature and strain sensitivities. , 2003, Optics express.

[6] W. Peng,et al. Random-hole optical fiber evanescent-wave gas sensing. , 2004, Optics letters.

[7] G. Hocker. Fiber-optic sensing of pressure and temperature. , 1979, Applied optics.

[8] P. Russell,et al. Endlessly single-mode photonic crystal fiber. , 1997, Optics letters.

[9] P. Russell. Photonic Crystal Fibers , 2003, Science.

[10] M. Fokine,et al. Integrated fiber Mach-Zehnder interferometer for electro-optic switching. , 2002, Optics letters.

[11] M. Naci Inci,et al. Three-dimensional optical profilometry using a four-core optical fibre , 2005 .