Use of Optical Tweezers to Fabricate Tunable Filters in Photonic Crystal Fibers (original) (raw)

Photonic Crystal Optical Tweezers

Arxiv preprint arXiv: …, 2009

Photonic Crystal Optical Tweezers Benjamin K. Wilson1, Tim Mentele2, Stephanie Bachar3, Emily Knouf4, Ausra Bendoraite4, Muneesh Tewari4,5, Suzie H. Pun2, and Lih Y. Lin1,* ... References 1. Kim, B.-S., Nikolovski, J., Bonadio, J. & Mooney, DJ Cyclic mechanical strain ...

Specialty Fibers Designed by Photonic Crystals

PROGRESS IN ELECTROMAGNETICS RESEARCHPIER, 2009

In this paper, several kinds of photonic crystal fibers (PCFs) have been proposed and characterized. Two types of PCF structures have been proposed, air holes in silica or silica rods in air in a triangular lattice around the core. It has been shown that by reshaping the cladding holes, varying the diameters of the holes in one or two rows around the core or changing the refractive index of the holes, different types of specialty fibers, such as dispersion shifted fibers (DSFs), non-zero dispersion shifted fibers (NZ-DSFs), dispersion flattened fibers (DFFs), dispersion compensating fibers (DCFs), and polarization maintaining fibers (PMFs), can be designed. The PCF core is silica to support the propagation of lightwave by total internal reflection (TIR) in the third telecommunication window. The chromatic dispersion, confinement loss and modal birefringence of the proposed specialty fibers have been numerically derived.

Fabrication of photonic crystal fibers

2012 IEEE 3rd International Conference on Photonics, 2012

Since the first experimental demonstration of a Photonic Crystal Fiber (PCF) in 1996 by Knight et d.', the optical properties and the fabrication of such fibers have attracted significant attention. The fiber structure with a lattice of air holes running along the length of the fiber provides a large variety of novel optical properties and improvements compared to standard optical fibers. The stack-and-pull procedure used to manufacture PCFs is a highly flexible method offering a large degree of freedom in the fabrication of PCFs with specific characteristics. A few of the remarkable optical properties of silica based PCFs are described and their applications within sensors are summarized.

Emerging Prospects of Photonic Crystal Fibers

Photonic crystal fibers are the periodic structures of air holes running along the fiber around a solid or hollow core. These present a diversity of new and improved features beyond what conventional optical fibers can offer. Due to their unique geometric structure, and superior control of guiding properties,PCFs present special properties and capabilities that lead to an spectacular potential for various applications. in optical communications and various other areas.This paper will review recent developmentsand discuss the emerging prospects in this field.

Strategies for realizing photonic crystal fiber bandpass filters

Optics express, 2008

Numerical design strategies are presented to achieve efficient broad or narrow band-pass filters based on index-guiding, solid-core, and single-mode photonic crystal fibers (PCFs). The filtering characteristics have been verified through BPM solver. By scaling the pitch constant, the bandpass window can be shifted accordingly. The fiber design constitutes a fluorine-doped central core, enlarged air-holes surrounding the down-doped core, and small air-holes in the cladding. The proposed bandpass filter is based on controlling the leakage losses, so one can tune filter characteristics simply by changing its length. From numerical simulations we show that for large values of air-hole diameter in the first ring, the bandpass window is narrow, while for low doping concentration and small sized air-holes in the first ring, bandpass window is very broad. We also simulate how the hole-size and number of rings in the PCF cladding affects the device characteristics. We find that a 5-cm long P...

Design and analysis of a modified Photonic Crystal Fiber structure

2007

In this paper, we propose a new type of Photonic Crystal Fiber (PCF) structure; wherein instead of using the air-holes in the cladding region, we use fluorine doped solid silica rods in order to reduce the problems associated with deformities of air-holes in the fabrication of PCF. Also, we analyze few of the properties of the proposed photonic crystal fiber structure such as Endlessly Single Mode (ESM) property and tunable dispersion, and compared with conventional photonic crystal fiber.

Tunable Photonic Crystal Microcavities

Applied Optics, 2002

We present a method for tuning a photonic crystal microcavity by modulating the index of refraction of the lattice sites within and surrounding the microcavity. The index of refraction can be actively modulated after infiltrating anisotropic liquid crystals into a two-dimensional photonic crystal lattice of air cylinders in silicon. We analyze the Q-factors and resonance frequencies of a tunable photonic crystal microcavity by considering various methods of index modulation. These tunable cavities are incorporated in a channel drop filter to demonstrate their enhancement of wavelength division multiplexing photonic crystal applications.