Abstract
Implementation of planar surface photonic crystal (PhC) structures leads to improvement of optical properties of optoelectronic devices. Application of such structures can be attractive for overall and local enhancement of light from patterned areas of the light emitting diode surface and for lightwave-guiding devices. We present techniques useful for PhC patterning and for patterning of different optic structures in surface of new promising material polydimethylsiloxane (PDMS). Paper proposes nanoimprint technology for fabrication of PhC in the surface of thin PDMS membranes for possible application in light emitting diodes. By PDMS patterning and its positioning on the device surface one can achieve original optical properties of optoelectronic devices. We also present new technique for fabrication of surface-relief fiber Bragg grating (SR FBG) based on PDMS waveguide.
Highlights
Photonics has recently become an intensively evolving area where the possibilities of photonic structures or crystals (PhC) for integrated optoelectronics were found
PhCs have a periodic change of refractive index at the interface of two materials, which causes the creation of photonic band gap in the crystal [1 and 2]
We presented few patterning techniques leading to fabrication of PDMS based micro- and photonic structures
Summary
Photonics has recently become an intensively evolving area where the possibilities of photonic structures or crystals (PhC) for integrated optoelectronics were found. PhCs have a periodic change of refractive index at the interface of two materials, which causes the creation of photonic band gap in the crystal [1 and 2]. These features of PhCs cause the effects that are not possible to obtain by means of conventional optical and optoelectronic devices. From the application point of view, there is a wide range of PhCs applications with perspective of significant improvement of features of optoelectronic devices as light emitting diodes, lasers and optical waveguides with photonic structure [3 - 5]. The paper proposes technology for fabrication of PDMS membranes which were patterned by PhC in the surface Such PhC PDMS membranes can be attractive for application in optoelectronic devices. We present a new technique for fabrication of surface-relief fiber Bragg grating (SR FBG) embedded in PDMS waveguide
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