Organic photonics: prospective nano/micro scale passive organic optical waveguides obtained from π-conjugated ligand molecules

Abstract

Nano/micro scale passive organic optical waveguides, which are self-assembled from tailor made organic molecules, are one of the less studied branches of organic photonics. This perspective article is primarily focused on the research work related to one dimensional (1D) passive organic optical waveguides. In the beginning, a brief theory of organic waveguides, recent works on active organic waveguides and attempts towards fabrication of integrated photonic components and circuits will be discussed. Later more focus will be given to passive organic wave guiding materials derived from 1D hexagonal submicrotubes, parallelepipedic nanotubes, shape shifting organic structures and paramagnetic tubes. By using laser ablation techniques, the polishing of organic tube tips, the precise control of the light propagation distance and the creation of multiple optical outputs will be discussed. This perspective also highlights some noteworthy applications of passive organic waveguides in remote sensing, excitation and defect identification. The end of this article concludes with the potential of passive organic optical waveguides in future organic nanophotonics.

Photonic Microrods Composed of Photoswitchable Molecules: Erasable Heterostructure Waveguides for Tunable Optical Modulation

“…Nano-and microscale organic solids [1][2][3][4] are emerging as promising photonic materials to realize miniaturized device applications such as wave guides, [3][4][5][6][7][8][9][10][11] lasers, [ 12,13 ] resonators, [ 14,15 ] circuits, [ 16 ] and optical fi lters. [ 17 ] In the next level of complexity, responsive organic solids which can change their shape and dimensions with respect to external perturbation are known to exhibit switchable photonic properties.…”

“…The open-state microrod, directly guides the visible light to the output end, which is typical for passive organic waveguides. [ 4,5,8 ] On the contrary, the closed-state wave guide absorbs the visible laser light, carrying out a time-dependent solid state cyclo-reversion reaction and thus delaying the output of the propagating light ( τ ). Based on this delay light principle, we have created a range of delay lines or modulators of different reaction volume within a single waveguide using laser writing and erasing technique (Scheme 1 e).…”

Dualmodus‐Lichttransduktion durch einen plastisch biegbaren organischen Kristall als optischer Wellenleiter

“…Abstract: Ein Anthracenderivat, 9,kristallisiert in Form fluoreszierender nadelfçrmiger Einkristalle,d ie leicht in zwei Richtungen plastischv erformt werden kçnnen. Ortsaufgelçste Photolumineszenzanalyse zeigt auf, dass dieses Material mit robusten optoelektronischen Eigenschaften ausgestattet ist, die selbst bei extremer Kristallverformung erhalten bleiben.…”

Radiative Channeling of Nanowire Frenkel Exciton Polaritons through Surface Plasmons

“…Figure 1 shows the conceptual schematic of the experiment. Since many of the organic semiconducting molecules have large absorption cross-section [2,3,21] and hyperpolarizability, [22,23] the EPs in such systems can be harnessed for active, [3,8] passive, [8,24,25] and nonlinear [+] Present address: This excitation wavelength is close Hybrid nanophotonic devices comprising of excitonic and plasmonic constituents have emerged as important platforms to explore polariton coupling and light emitting devices at subwavelength scale.…”

“…[1][2][3][4][5][6][7] Of the many nanostructures studied in the context of subwavelength light propagation, nanowires made of organic semiconductor molecules have drawn significant attention in recent times. Since many of the organic semiconducting molecules have large absorption cross-section [2,3,21] and hyperpolarizability, [22,23] the EPs in such systems can be harnessed for active, [3,8] passive, [8,24,25] and nonlinear to the absorption band of the molecular nanowire, [8] which further results in redshifted exciton-polariton generation, and subsequent propagation along the length of the nanowire. Since many of the organic semiconducting molecules have large absorption cross-section [2,3,21] and hyperpolarizability, [22,23] the EPs in such systems can be harnessed for active, [3,8] passive, [8,24,25] and nonlinear to the absorption band of the molecular nanowire, [8] which further results in redshifted exciton-polariton generation, and subsequent propagation along the length of the nanowire.…”