Results 41 to 50 of about 190,146 (342)

Propagation of Light in Photonic Crystal Fibre Devices

, 2005
We describe a semi-analytical approach for three-dimensional analysis of photonic crystal fibre devices. The approach relies on modal transmission-line theory. We offer two examples illustrating the utilization of this approach in photonic crystal fibres:
Akbari M, Ali Dabirian, Birks T A, Coldren L A, Dabirian A, Desoer C A, Eggleton B J, Faria J A B, Knight J C, Larsen T T, Limpert J, Lin C H, Mahmood Akbari, Mortensen N A, Niels Asger Mortensen, Saitoh K, Slang M M, Zhang S H, Zhi W   +18 more
core   +1 more source

Tamm states in one dimensional photonic crystals containing left-handed materials [PDF]

, 2006
We present a theoretical study of electromagnetic surface waves localized at an interface separating a conventional uniform medium and a semi-infinite 1-D photonic crystal made of alternate left-handed metamaterial and right-handed material which we ...
Abdolrahman Namdar, Garcia, Gerardin, Kramper, Malkova, Martorell, Moreno, Pendry, Shadrivov, Shadrivov, Shelby, Smith, Tamm, Veselago, Yeh, Yeh, Yeh, Zhang, Ziolkowski   +18 more
core   +2 more sources

Dynamics simulation of photonic crystal fiber end face polishing

Advances in Mechanical Engineering, 2017
The high quality of polished end face of photonic crystal fiber has a significant effect on coupling efficiency when photonic crystal fiber is used to couple with other optical devices. In order to obtain the smooth surface of the photonic crystal fiber,
Zhengqi Zhao, Di Feng, Qimeng Fang, Jingming Song, Ningfang Song   +4 more
doaj   +1 more source

Study of transmission properties for waveguide bends by use of a circular photonic crystal

, 2005
We study the transmission properties for the waveguide bends composed by a circular photonic crystal. Two types (Y and U type) of the waveguide bends utilizing the circular photonic crystal are studied.
Berenger, Borel, Chutinan, Frandsen, Horiuchi, Jensen, Joannopoulos, John, Johnson, Manolatou, Miao, Min Qiu, Ntakis, Sanshui Xiao, Sharkawy, Smajic, Taflove, Talneau, Yablonovitch   +18 more
core   +1 more source

Efficient excitation of self-collimated beams and single Bloch modes in planar photonic crystals [PDF]

, 2003
Using finite-difference time-domain calculations, we investigate out-of-plane coupling between a square-lattice planar photonic crystal and a conventional waveguide located above the photonic crystal.
Scherer, Axel, Witzens, Jeremy
core   +1 more source

Extremal transmission through a microwave photonic crystal and the observation of edge states in a rectangular Dirac billiard

, 2011
This article presents experimental results on properties of waves propagating in an unbounded and a bounded photonic crystal consisting of metallic cylinders which are arranged in a triangular lattice. First, we present transmission measurements of plane
Bittner, S., Dietz, B., Miski-Oglu, M., Richter, A.   +3 more
core   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Cm-Level Photonic-Crystal-Like Subwavelength Waveguide Platform with High Integration Density

Applied Sciences, 2019
In this paper, the cm-level photonic-crystal-like subwavelength waveguide platform is developed and analyzed by using the finite-difference time-domain method.
Xiangxin Huang, Gengxin Chen, Wen Zhou, Xuguang Huang   +3 more
doaj   +1 more source

Two-dimensional heterogeneous photonic bandedge laser

, 2004
We proposed and realized a two-dimensional (2D) photonic bandedge laser surrounded by the photonic bandgap. The heterogeneous photonic crystal structure consists of two triangular lattices of the same lattice constant with different air hole radii.
Kim, Se-Heon, Kim, Sun-Kyung, Kim, Sung-Bock, Kwon, Soon-Hong, Lee, Yong-Hee   +4 more
core   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

Advanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar, Matthew Large, Andrea Ciavatti, Laura Basiricò, Beatrice Fraboni, Paul J. Sellin, Attila J. Mozer, Marco Petasecca, Matthew J. Griffith   +8 more
wiley   +1 more source