Microfluidic Plugs Produce Long-Period Gratings in Microstructured Optical Fiber
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2PP of ORMOCERs will be used for the low-cost fabrication of artificial microstructured and nanostructured components for different applications in optics, medicine, and biology. STEVEN TROHALAKI
Microfluidic Plugs Produce Long-Period Gratings in Microstructured Optical Fiber With the development of wavelengthdivision multiplexing, bandwidth has been significantly increased over the past few years, but for continued advancement, dynamic filters and attenuators need to be developed. Researchers at OFS Labora-
tories in New Jersey have developed a microstructured optical fiber (MOF) whose wavelength-dependent attenuation can be modified by a long-period grating, composed of an alternating air/liquid refractive index, in the cladding. As described in the March 3 issue of Applied Physics Letters, C. Kerbage and B. Eggleton, who is now director of the photonics research center called CUDOS at the University of Sydney in Australia, have developed a method of alternately drawing fluid (in this study, trifluorotoluene) and air into the holes of the MOF. This is achieved by repeatedly dipping a cleaved fiber in a liquid reservoir
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