Optical waveguides based on one-dimensional organic crystals

Abstract

Optical waveguide of organic micro/nanocrystals is one of crucial elements in miniaturized integrated photonics. One-dimensional (1D) organic crystals with various optical features have attracted increasing interests towards promising photonic devices, such as multichannel signal converter, organic field-effect optical waveguide, sensitive detector, and optical logic gate. Therefore, a summary about the 1D organic micro/nanocrystals based optical waveguide is important for the rational design and fabrication of novel optical devices towards optoelectronics applications. Herein, recent advances of optical waveguide based on 1D organic micro/nanocrystals with solid, flexible, hollow, uniformly doped, core-shell, multiblock and branched structures are summarized from the aspects of the waveguide properties and applications in photonic devices. Furthermore, we presented our personal view about the expectation of future development in 1D organic optical waveguide for the photonic applications. Graphical abstract

Segregated Array Tailoring Charge‐Transfer Degree of Organic Cocrystal for the Efficient Near‐Infrared Emission beyond 760 nm

“…Optical waveguide demonstrates enticing promising applications in optical computing systems, while most organic active optical waveguides concentrate on the visible region. [ 33 ] Due to the lack of organic micro/nanocrystals with NIR emission, the organic active optical waveguide in the NIR region is rarely reported. Inspired by the attractive NIR emission, the optical waveguide measurement of TP‐F 4 TCNQ microwire with a length of 81.5 µm (Figure 4f) was performed by accurately shifting the excitation laser spots (λ = 532 nm, diameter = 1 µm) along the length of rod based on the homemade micro‐area photoluminescence spectroscope (Figure 4e).…”

Precise Synthesis of Organic Heterostructures via the Synergy Approach of Polymorphism and Cocrystal Engineering for Optical Applications

“…Compared with inorganic materials, organic micro/nanocrystals have unique advantages, such as excellent molecular design capabilities, adjustable optoelectronic properties, good flexibility, simple preparation methods and low cost, therefore, they have been widely applied in various optoelectronic devices, such as optical waveguides, [ 1‐3 ] light‐emitting diodes, [ 4‐5 ] solid‐state lasers [ 6‐7 ] and field effect transistors. [ 8‐12 ] Recently, the research on organic micro/nanostructures has developed rapidly.…”

Optical Polarization-Based Measurement Methods for Characterization of Self-Assembled Peptides’ and Amino Acids’ Micro- and Nanostructures

“…Polarized waveguiding at the microscale is also of great importance for a variety of photonic applications, such as for increasing the polarization efficiency of liquid crystal displays [ 79 , 80 ] and for polarized data decoding [ 81 ]. Thus, major research efforts are aimed at finding more organic materials that can guide light at various scale sizes [ 82 ].…”