Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Dipakbin Q Chowdhury"'
Publikováno v:
Physics Letters A. 363:159-163
We report the existence of nonlinear waves propagating in a waveguide composed of a negative-index medium surrounded by conventional media, i.e. in a slab waveguide with a negative-index nonlinear core. We study the dispersion relation of found modes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9066d9d6adec472196a44eefe8763fce
https://doi.org/10.1016/j.physleta.2006.10.087
https://doi.org/10.1016/j.physleta.2006.10.087
Publikováno v:
Optics Communications. 260:46-49
An exact analytical expression for the Stokes power generated by stimulated Brillouin scattering in a lossy medium is derived for the first time. The approach is based on a distributed, fluctuating source model in the undepleted pump regime, previous
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3fefd7e2ac39fae94a8ffcb502ba7d1
https://doi.org/10.1016/j.optcom.2005.10.048
https://doi.org/10.1016/j.optcom.2005.10.048
Autor:
T. Otani, Richard E. Wagner, Dipakbin Q Chowdhury, Ioannis Roudas, Thomas E. Stern, Neophytos Antoniades
Publikováno v:
Journal of Lightwave Technology. 20:921-936
This paper presents an accurate theoretical model for the study of concatenation of optical multiplexers/demultiplexers (MUXs/DMUXs) in transparent multiwavelength optical networks. The model is based on a semianalytical technique for the evaluation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f5aea00c3b5d5f8969f1d8d49ddaca6
https://doi.org/10.1109/jlt.2002.1018803
https://doi.org/10.1109/jlt.2002.1018803
Autor:
Richard S. Vodhanel, D. Culverhouse, T. Kennedy, Dipakbin Q Chowdhury, Jan Conradi, C.-C. Wang, Ioannis Tomkos, C. Giroux, M. Sharma, A. Kruse, N.M. Lascar, Karin Ennser, B. Hallock, Shiva Kumar, Ioannis Roudas
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 7:439-460
We present a detailed experimental and theoretical study, showing that a novel nonzero dispersion-shifted fiber with negative dispersion enhances the capabilities of metropolitan area optical systems, while at the same time, reducing the system cost
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d23a01451263f2a4fb8afe786ed8ffa
https://doi.org/10.1109/2944.962268
https://doi.org/10.1109/2944.962268
Autor:
Dipakbin Q. Chowdhury, D. Wilcox
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 6:227-232
A variational formulation-based vector perturbation model is used to compare the contribution of stress anisotropy and geometric deformation toward optical fiber birefringence. We show that relative impact of stress on birefringence and differential
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::730ccc98a0e3787464a9687ab4aa78a8
https://doi.org/10.1109/2944.847757
https://doi.org/10.1109/2944.847757
Autor:
Dipakbin Q. Chowdhury
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 6:233-239
A method for designing polarization-insensitive reflection grating-based planar optical demultiplexer is presented. The grating profile is modified to obtain minimum loss variation over a large (31 nm) bandwidth. Also, the maximum polarization depend
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7f554148b99dc17d22eaa5205de1d7e
https://doi.org/10.1109/2944.847758
https://doi.org/10.1109/2944.847758
Publikováno v:
Optics Communications. 131:343-346
Theoretical results on absorptive optical bistability of micron-sized droplets doped with a saturable absorber are presented. Bistability is observed only when the incident light frequency is near or on a morphology dependent resonance of the sphere.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6c29e72bea5cf794c48da7d57725fd2
https://doi.org/10.1016/0030-4018(96)00324-0
https://doi.org/10.1016/0030-4018(96)00324-0
Autor:
Dipakbin Q. Chowdhury, Daniel A. Nolan
Publikováno v:
Optics letters. 20(19)
A vector perturbation model for computing optical fiber birefringence for an arbitrary two-dimensional index profile is developed. The vector wave equation is solved to yield the unperturbed vector f ields for an azimuthally symmetric refractive inde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef2e580b3a967882dde833060832a780
https://pubmed.ncbi.nlm.nih.gov/19862221
https://pubmed.ncbi.nlm.nih.gov/19862221
Autor:
Dipakbin Q. Chowdhury
Publikováno v:
OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171).
Summary form only given. Polarisation mode dispersion (PMD) is a major impairment for high-bit-rate optical systems. The objective of this course is threefold: (1) understand the physical phenomena of PMD, (2) review the current status of understandi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a47d565e0d0c16b67ad187e97715849e
https://doi.org/10.1109/ofc.2001.927836
https://doi.org/10.1109/ofc.2001.927836
Autor:
Steven C. Hill, Dipakbin Q. Chowdhury
Publikováno v:
Nature Physics. 3:378-379
A demonstration of continuous sum-frequency generation of visible light in a microscopic silica resonator could provide a light source for on-chip silicon photonics and applications in the UV.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14f73f1c296e1efa62f1fa9c94ca3ad4
https://doi.org/10.1038/nphys638
https://doi.org/10.1038/nphys638