Electro-optical switch and continuously tunable filter based on a Bragg grating in a planar waveguide with a liquid crystal overlayer

2002 ◽  
Vol 41 (11) ◽  
pp. 2890 ◽  
Author(s):  
Giuseppe Coppola
Keyword(s):  
Liquid Crystal ◽  
Planar Waveguide ◽  
Optical Switch ◽  
Tunable Filter ◽  
Bragg Grating

Electro-optical switch based on a Bragg grating in a liquid crystal waveguide

2003 ◽  
Author(s):  
Luigi Sirleto ◽  
Giuseppe Coppola ◽  
Giovanni Breglio ◽  
Giancarlo Abbate ◽  
Giancarlo C. Righini ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Optical Switch ◽  
Bragg Grating

scholarly journals A Tunable Optical Bragg Grating Filter Based on the Droplet Sagging Effect on a Superhydrophobic Nanopillar Array

Sensors ◽  
2019 ◽  
Vol 19 (15) ◽  
pp. 3324
Author(s):  
Meng Zhang ◽  
Jiansheng Liu ◽  
Weifeng Cheng ◽  
Jiangtao Cheng ◽  
Zheng Zheng
Keyword(s):  
Refractive Index ◽  
Planar Waveguide ◽  
Tuning Range ◽  
Liquid Droplet ◽  
Tunable Filter ◽  
Bragg Grating ◽  
Refractive Index Sensor ◽  
Narrow Bandwidth ◽  
Simulation Results ◽  
Index Unit

Nanostructures have been widely applied on superhydrophobic surfaces for controlling the wetting states of liquid microdroplets. Many modern optic devices including sensors are also integrated with micro- or nanostructures for function enhancement. However, it is rarely reported that both microfluidics and optics are compatibly integrated in the same nanostructures. In this paper, a novel microfluidic-controlled tunable filter composed of an array of periodic micro/nanopillars on top of a planar waveguide is proposed and numerically simulated, in which the periodic pillars endow both the Bragg grating and the superhydrophobic functions. The tunability of grating is achieved by controlling the sagging depth of a liquid droplet into the periodic pillars. Simulation results show that a narrow bandwidth of 0.4 nm and a wide wavelength tuning range over 25 nm can be achieved by such a microfluidic-based tunable optofluidic waveguide Bragg grating filter. Moreover, this proposed scheme can be easily modified as a refractive index sensor with a sensitivity of 103 nm per refractive index unit.

A robust and inexpensive all optical switch with chiral nematic liquid crystal

2021 ◽  
Vol 119 ◽  
pp. 111306
Author(s):  
Hossein mehrzad ◽  
Ezeddin Mohajerani ◽  
Mohammad Mohammadimasoudi ◽  
Kristiaan Neyts
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Optical Switch ◽  
Chiral Nematic ◽  
All Optical ◽  
All Optical Switch

scholarly journals 100GHz electrically tunable planar Bragg grating via nematic liquid crystal overlay for reconfigurable WDM networks.

2007 ◽  
Author(s):  
Faisal Rafiq Mahamd Adikan ◽  
James C. Gates ◽  
Andriy Dyadyashu ◽  
Huw E. Major ◽  
Corin B. E. Gawith ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Wdm Networks ◽  
Bragg Grating

Efficient miniature fiber-optic tunable filter based on intracore Bragg grating and electrically resistive coating

1998 ◽  
Vol 10 (3) ◽  
pp. 361-363 ◽  
Author(s):  
H.G. Limberger ◽  
Nguyen Hong Ky ◽  
D.M. Costantini ◽  
R.P. Salathe ◽  
C.A.P. Muller ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Tunable Filter ◽  
Bragg Grating ◽  
Resistive Coating

Cognitive fiber Bragg grating sensors system based on fiber Fabry-Perot tunable filter technology

2011 ◽  
Author(s):  
Hongtao Zhang ◽  
Pengfei Wang ◽  
Jilin Zou ◽  
Jing Xie ◽  
Hong-Liang Cui
Keyword(s):  
Fiber Bragg Grating ◽  
Tunable Filter ◽  
Bragg Grating ◽  
Fiber Bragg Grating Sensors ◽  
Fabry Perot

WDM four-fiber ring with add/drop acousto-optic tunable filter and 4×4 optical switch

2002 ◽  
Author(s):  
S. Hamada ◽  
K. Asahi ◽  
T. Hosoi ◽  
C. Nakaya ◽  
D. Uehara ◽  
...  
Keyword(s):  
Optical Switch ◽  
Tunable Filter ◽  
Fiber Ring
Sign in / Sign up

Export Citation Format

Share Document