Problems of the diagnostics of waveguide of thin film and volume materials for the creation of hybrid and quasimonolithic integrated optical elements and devices

1995 ◽  
Author(s):  
Lyudmila I. Konopaltseva ◽  
M. I. Schuchenko ◽  
Nadezda P. Sytcheva
Keyword(s):  
Thin Film ◽  
Optical Elements ◽  
Integrated Optical ◽  
The Creation

Fabrication of binary optical elements by thin film deposition

2000 ◽  
Author(s):  
Wei Huang ◽  
Chongxi Zhou ◽  
Jin Zhu ◽  
Yundong Zhang
Keyword(s):  
Thin Film ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Optical Elements

scholarly journals Semiperiodic Ultra-Broadband Double-Grating to Improve c-Si Thin-Film Solar Cell’s Optical Absorption, through Numerical Structural Optimization

Crystals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 264 ◽  
Author(s):  
Mandana Jalali ◽  
Hamid Nadgaran ◽  
Daniel Erni
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Optical Absorption ◽  
Structural Optimization ◽  
Thin Film Solar Cells ◽  
Physical Parameters ◽  
Reference Structure ◽  
Photon Management ◽  
Integrated Optical ◽  
Si Thin Film

Plasmonic gratings provide effective photon management techniques in thin-film solar cells, capable of extending the optical thickness of the solar cell’s active layer. However, the ultra-broadband nature of such application makes an optimal design of the grating structure quite challenging, since a fully periodic grating operates only in specific spectral ranges. To achieve a more broadband design, semiperiodicity is introduced, which, due to having controllable disorder, is an apt solution in broadband optical applications. In this work, semiperiodic double gratings as a broadband photon management technique are introduced in order to improve the optical absorption of c-Si thin-film solar cells, and optimized through numerical structural optimization. Physical parameters of both front and back gratings are determined taking the spectrally integrated optical absorption as the figure of merit and subsequently a semiperiodic double grating is established through adding defects to the fully periodic structure. It is shown that such semiperiodic structure is capable of enhancing the spectrally integrated optical absorption 88.6 % compared to a reference structure without gratings.

From Ferroelectrics to Polymers - Perspectives for Thin Film Optical Waveguides and Devices

1999 ◽  
Vol 597 ◽  
Author(s):  
Christoph Buchal
Keyword(s):  
Thin Film ◽  
Optical Waveguides ◽  
Film Growth ◽  
Optical Devices ◽  
Time Span ◽  
Thin Film Growth ◽  
Optical Functions ◽  
Integrated Optical ◽  
Integrated Optical Devices ◽  
Commercial Applications

AbstractPresently commercial optical fiber links experience an explosive growth. On the other hand, the integration of optical functions on a single substrate (“Integrated Optical Device”) is still mostly limited to the R & D-laboratories. Only Mach-Zehnder modulators, made from ferroelectric crystals, have found commercial applications so far. The development phase of the integrated optical devices, based on bulk crystalline LiNbO3, is now covering a time span of nearly 30 years. In comparison, the development of the thin film growth of optical oxide ferroelectrics or of tailored optical polymers is just a few years old and we are still at the beginning of the learning curve.

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