Resolution of photonic crystal superprism
Toshihiko Baba,Takashi Matsumoto +1 more
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TLDR
In this article, the authors theoretically investigated the performance of the photonic crystal superprism, that is, the propagating beam quality, the wavelength sensitivity, and the resolution as a narrow band filter at 1.5μm-wavelength range.Abstract:
We theoretically investigated the performance of the photonic crystal superprism, that is, the propagating beam quality, the wavelength sensitivity, and the resolution as a narrow band filter at 1.5-μm-wavelength range. First, we defined the equi-incident-angle curve in the Brillouin zone. Next, we mapped three parameters that represented the abovementioned performance over the Brillouin zone. As a result, we found a narrow design window that allows a high resolution of 0.4 nm along an equi-incident-angle curve but requires an incident beam width of over 100 μm and a device length of centimeter order. It can be an essential high efficiency filter if the input end of the crystal is optimized and the propagation loss is suppressed.read more
Citations
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Journal ArticleDOI
Compact wavelength demultiplexing using focusing negative index photonic crystal superprisms.
Babak Momeni,Jiandong Huang,Mohammad Soltani,Murtaza Askari,Saeed Mohammadi,Mohammad Rakhshandehroo,Ali Adibi +6 more
TL;DR: A compact photonic crystal wavelength demultiplexing device based on a diffraction compensation scheme with two orders of magnitude performance improvement over the conventional superprism structures reported to date is demonstrated.
Journal ArticleDOI
Surface states in photonic crystals
TL;DR: In this paper, the propagation of surface electromagnetic waves along photonic crystal (PC) boundaries is examined, and it is shown that in a number of cases, these are backward waves, which can be regarded as Tamm states.
Journal ArticleDOI
Exploring light propagating in photonic crystals with Fourier optics
TL;DR: In this article, the dispersion curve of a coupled cavity waveguide and the equifrequency surfaces and polarization properties of a PhC beam splitter are extracted without postprocessing or cumbersome near-field scanning.
Journal ArticleDOI
Wavelength demultiplexer consisting of Photonic crystal superprism and superlens
TL;DR: A novel compact wavelength demultiplexer, for which two functions arising from the anomalous dispersion characteristics of photonic crystals are combined, including the superprism that exhibits large angular dispersion and expansion of light beam and the superlens used for the focusing of the expanded light beam.
References
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Journal ArticleDOI
Existence of a Photonic Gap in Periodic Dielectric Structures
TL;DR: It is determined that dielectric spheres arranged in the diamond structure do possess a full photonic band gap, and this gap exists for refractive-index contrasts as low as 2.5%.
Journal ArticleDOI
Superprism Phenomena in Photonic Crystals
Hideo Kosaka,Takayuki Kawashima,Akihisa Tomita,Masaya Notomi,Toshiaki Tamamura,Takashi Sato,Shojiro Kawakami +6 more
TL;DR: In this article, a super-prism phenomenon was demonstrated at optical wavelength in photonic crystals with three-dimensional-periodic structure fabricated on Si substrate, where the incident-angle dependence including negative refraction and multiple beam branching was interpreted from highly anisotropic dispersion surfaces derived by photonic band calculation.
Journal ArticleDOI
Self-collimating phenomena in photonic crystals
Hideo Kosaka,T. Kawashima,Akihisa Tomita,Masaya Notomi,Masaya Notomi,Toshiaki Tamamura,Toshiaki Tamamura,Takashi Sato,Shojiro Kawakami +8 more
TL;DR: In this article, self-determining collimated light is generated in a photonic crystal fabricated on silicon and the divergence of the collimated beam is insensitive to that of the incident beam and much smaller than the divergence generated in conventional Gaussian optics.
Book
Photonic Crystals and Light Localization in the 21st Century
TL;DR: In this article, the authors proposed a method for the analysis of two-dimensional Acoustic and Elastic Band Gap Materials (ABG) using random Lasers with Coherent Feedback (CLF).
Book ChapterDOI
Photonic Band Gap Materials
TL;DR: An overview of the theoretical and experimental efforts in obtaining a photonic band gap, a frequency band in three-dimensional dielectric structures in which electromagnetic waves are forbidden, is presented in this paper.