Slow Light Propagation in Liquid-Crystal Infiltrated Silicon-On-Insulator Photonic Crystal Channel Waveguides

2010 ◽  
Vol 28 (17) ◽  
pp. 2560-2571 ◽  
Author(s):  
Swati Rawal ◽  
R. K. Sinha ◽  
Richard M. De La Rue
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystal ◽  
Light Propagation ◽  
Slow Light ◽  
Silicon On Insulator ◽  
Channel Waveguides

Slow light propagation in tunable nanoscale photonic crystal cavity filled with nematic liquid crystal

2014 ◽  
Vol 53 (10) ◽  
pp. 102705 ◽  
Author(s):  
Kaisar R. Khan ◽  
Khaled Mnaymneh ◽  
Hazem Awad ◽  
Imad Hasan
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystal ◽  
Nematic Liquid Crystal ◽  
Light Propagation ◽  
Slow Light ◽  
Photonic Crystal Cavity

scholarly journals Towards lab-on-chip ultrasensitive ethanol detection using photonic crystal waveguide operating in the mid infrared

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ali Rostamian ◽  
Ehsan Madadi-Kandjani ◽  
Hamed Dalir ◽  
Volker J. Sorger ◽  
Ray T. Chen
Keyword(s):  
Photonic Crystal ◽  
Slow Light ◽  
High Sensitivity ◽  
Guided Wave ◽  
Silicon On Insulator ◽  
Group Index ◽  
Photonic Crystal Waveguide ◽  
Mid Infrared ◽  
Lab On Chip ◽  
On Chip

Abstract Thanks to the unique molecular fingerprints in the mid-infrared spectral region, absorption spectroscopy in this regime has attracted widespread attention in recent years. Contrary to commercially available infrared spectrometers, which are limited by being bulky and cost-intensive, laboratory-on-chip infrared spectrometers can offer sensor advancements including raw sensing performance in addition to use such as enhanced portability. Several platforms have been proposed in the past for on-chip ethanol detection. However, selective sensing with high sensitivity at room temperature has remained a challenge. Here, we experimentally demonstrate an on-chip ethyl alcohol sensor based on a holey photonic crystal waveguide on silicon on insulator-based photonics sensing platform offering an enhanced photoabsorption thus improving sensitivity. This is achieved by designing and engineering an optical slow-light mode with a high group-index of n g  = 73 and a strong localization of modal power in analyte, enabled by the photonic crystal waveguide structure. This approach includes a codesign paradigm that uniquely features an increased effective path length traversed by the guided wave through the to-be-sensed gas analyte. This PIC-based lab-on-chip sensor is exemplary, spectrally designed to operate at the center wavelength of 3.4 μm to match the peak absorbance for ethanol. However, the slow-light enhancement concept is universal offering to cover a wide design-window and spectral ranges towards sensing a plurality of gas species. Using the holey photonic crystal waveguide, we demonstrate the capability of achieving parts per billion levels of gas detection precision. High sensitivity combined with tailorable spectral range along with a compact form-factor enables a new class of portable photonic sensor platforms when combined with integrated with quantum cascade laser and detectors.

scholarly journals Probing molecular absorption under slow-light propagation using a photonic crystal waveguide

2012 ◽  
Vol 37 (23) ◽  
pp. 4934 ◽  
Author(s):  
Isabelle Dicaire ◽  
Alfredo De Rossi ◽  
Sylvain Combrié ◽  
Luc Thévenaz
Keyword(s):  
Photonic Crystal ◽  
Light Propagation ◽  
Slow Light ◽  
Photonic Crystal Waveguide ◽  
Molecular Absorption

Slow-light photonic crystal waveguides with ring-shaped holes on silicon-on-insulator

2008 ◽  
Author(s):  
Antti Säynätjoki ◽  
Mikaël Mulot ◽  
Kevin Vynck ◽  
David Cassagne ◽  
Jouni Ahopelto ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Slow Light ◽  
Silicon On Insulator ◽  
Photonic Crystal Waveguides

Slow Light Propagation in Photonic Crystal-Based Meandering Delay Lines Using the PTS Material

2018 ◽  
Vol 44 (3) ◽  
pp. 2335-2343
Author(s):  
Mahdi Taheri ◽  
Masoud Omoomi ◽  
Jalil Mazloum
Keyword(s):  
Photonic Crystal ◽  
Light Propagation ◽  
Slow Light ◽  
Delay Lines

Dispersion engineering and thermo-optic tuning in mid-infrared photonic crystal slow light waveguides on silicon-on-insulator

2018 ◽  
Vol 43 (22) ◽  
pp. 5504 ◽  
Author(s):  
Yiming Ma ◽  
Bowei Dong ◽  
Bo Li ◽  
Kah-Wee Ang ◽  
Chengkuo Lee
Keyword(s):  
Photonic Crystal ◽  
Slow Light ◽  
Silicon On Insulator ◽  
Mid Infrared ◽  
Dispersion Engineering

Low dispersion slow light in silicon-on-insulator photonic crystal waveguide

2010 ◽  
Author(s):  
Amir Hosseini ◽  
David Kwong ◽  
Harish Subbaraman ◽  
Ray T. Chen
Keyword(s):  
Photonic Crystal ◽  
Slow Light ◽  
Silicon On Insulator ◽  
Photonic Crystal Waveguide ◽  
Low Dispersion

Enhanced slow light propagation in photonic crystal waveguides using angular properties of scatter elements

2012 ◽  
Vol 10 (12) ◽  
pp. 122301-122304
Author(s):  
Daobin Wang Daobin Wang ◽  
Jie Zhang Jie Zhang ◽  
Yongli Zhao Yongli Zhao ◽  
Sai Chen Sai Chen ◽  
Lihua Yuan Lihua Yuan ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Light Propagation ◽  
Slow Light ◽  
Photonic Crystal Waveguides
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