We propose a novel air-guiding photonic bandgap fiber based on a square lattice cladding. The fiber presents a 20% wider bandgap than is achievable with a conventional triangular-lattice-based cladding and with the choice of a nine-cell core can be effectively single moded at all wavelengths within the bandgap.
© 2007 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: May 22, 2007
Revised Manuscript: June 29, 2007
Manuscript Accepted: July 5, 2007
Published: August 2, 2007
F. Poletti and D. J. Richardson, "Hollow-core photonic bandgap fibers based on a square lattice cladding," Opt. Lett. 32, 2282-2284 (2007)