Race‐Track Type Resonator Integrated Active Add‐Drop Filter from Flexible Organic Crystals: Experiments and Numerical Calculations

Abstract

The success of silicon photonics stems from the ability to design, simulate, and construct optical components and their optical performance simultaneously. However, poor mechanical compliance of Si‐based materials demands alternative photonic materials. The recent development of mechanically flexible organic waveguides as reliable photonic material platform is quite promising. Herein, the design and fabrication of a race‐track type resonator based add‐drop filter (ADF) from elastically bendable 9,10‐dibromoanthracene (DBA) crystals are reported. The elastic DBA microcrystals exhibit pseudo‐plasticity on a substrate facilitating the fabrication of race‐track type resonator and ADF via mechanophotonics technique. Photonic investigations of the circuit reveal its spectral filtering ability. These experimental observations confirmed by FDTD modelling support the unique abilities of organic optical elements for photonic device applications.

Mechanophotonics: fabrication of a 2 × 2 hybrid directional coupler from flexible organic crystals

“…Importantly, organic elastic crystals' adaptability towards mechanical stress and their pseudo-plasticity on oil-free substrates provides a tremendous opportunity to construct novel PICs using mechanophotonics – an atomic force microscopy (AFM) cantilever tip-based crystal micromanipulation technique. 1,2,13 The successful demonstration of organic flexible microcrystals as waveguides (visible and near-IR), 8,9,13,19–21 ring-resonators, 22–24 interferometers, 25,26 modulators, 27 microlasers, 4,28,29 add-drop-filters, 22,23,30 wavelength division multiplexers 31 and PICs 1,2,22,23,31–35 proves the consistent efforts by researchers for implementing organic crystals in futuristic photonic device applications. Additionally, organic cocrystals with hierarchical nanostructures are important for multi-color emissions, optical logic gates, and multi-channel photon transport.…”

Amphibian‐like Flexible Organic Crystal Optical Fibers for Underwater/Air Micro‐Precision Lighting and Sensing

“…Despite a strain of 1.89 % caused due to micromechanical bending on the crystal, the elastic BPP microcrystal did not revert to its original shape after stress removal because of its pseudoplasticity (crystal surface and substrate adhesive interaction). [33,[35][36][37][38][39][40][41] The relative optical loss resulting from the crystal bend (α' bent -α' straight ) was measured to be 0.07399 dB μm À 1 (Figure 3d,f).…”

Magnetically controlled assembly: a new approach to organic integrated photonics

“…66,67 Rational coupling of lowdimensional nanostructures into heterostructures not only effectively preserves their respective features, but also generates novel photonic properties due to charge and energy transfer at the coupling interface. 68,69 Such complex heterostructures play a critical role in the development of photonic circuits, such as photonic routers, [70][71][72][73] photonic modulators, [74][75][76] logic gates, 77,78 wavelength lters, 79 and multiplexers. 80,81 Furthermore, signicant progress in the eld of mechanophotonics, [82][83][84][85][86] which integrates exible molecular crystals and atomic force microscopy tip-based mechanical micromanipulation, has propelled the advancement of complex photonic structures and enabled the realization of photonic integrated circuits with enhanced functionality (Fig.…”