scholarly journals Geometric Phases and The Sagnac Effect: Foundational Aspects and Sensing Applications

2022 ◽  
pp. 2100121
Author(s):  
Ismael L. Paiva ◽  
Rain Lenny ◽  
Eliahu Cohen
Keyword(s):  
Sagnac Effect ◽  
Geometric Phases ◽  
Sensing Applications

Computer simulation study about the dependence of amorphous silicon photonic waveguides efficiency on the material quality

2020 ◽  
Vol 90 (3) ◽  
pp. 30502
Author(s):  
Alessandro Fantoni ◽  
João Costa ◽  
Paulo Lourenço ◽  
Manuela Vieira
Keyword(s):  
Amorphous Silicon ◽  
High Throughput Screening ◽  
Simulation Analysis ◽  
Low Cost ◽  
Deposition Process ◽  
Large Area ◽  
Sidewall Roughness ◽  
Sensing Applications ◽  
Fabrication Defects ◽  
The Impact

Amorphous silicon PECVD photonic integrated devices are promising candidates for low cost sensing applications. This manuscript reports a simulation analysis about the impact on the overall efficiency caused by the lithography imperfections in the deposition process. The tolerance to the fabrication defects of a photonic sensor based on surface plasmonic resonance is analysed. The simulations are performed with FDTD and BPM algorithms. The device is a plasmonic interferometer composed by an a-Si:H waveguide covered by a thin gold layer. The sensing analysis is performed by equally splitting the input light into two arms, allowing the sensor to be calibrated by its reference arm. Two different 1 × 2 power splitter configurations are presented: a directional coupler and a multimode interference splitter. The waveguide sidewall roughness is considered as the major negative effect caused by deposition imperfections. The simulation results show that plasmonic effects can be excited in the interferometric waveguide structure, allowing a sensing device with enough sensitivity to support the functioning of a bio sensor for high throughput screening. In addition, the good tolerance to the waveguide wall roughness, points out the PECVD deposition technique as reliable method for the overall sensor system to be produced in a low-cost system. The large area deposition of photonics structures, allowed by the PECVD method, can be explored to design a multiplexed system for analysis of multiple biomarkers to further increase the tolerance to fabrication defects.

Special theory of relativity and the Sagnac effect

1988 ◽  
Vol 156 (9) ◽  
pp. 137-143 ◽  
Author(s):  
Anatolii A. Logunov ◽  
Yu.V. Chugreev
Keyword(s):  
Special Theory ◽  
Sagnac Effect ◽  
Theory Of Relativity ◽  
Special Theory Of Relativity

Earlier studies of the Sagnac effect

1997 ◽  
Vol 167 (3) ◽  
pp. 337 ◽  
Author(s):  
Grigorii B. Malykin
Keyword(s):  
Sagnac Effect

Geometric phases in singlemode fiber lightguides and fiber ring interferometers

2004 ◽  
Vol 174 (3) ◽  
pp. 303 ◽  
Author(s):  
Grigorii B. Malykin ◽  
Vera I. Pozdnyakova
Keyword(s):  
Fiber Ring ◽  
Geometric Phases ◽  
Fiber Lightguides

Physical problems of fiber gyroscopy based on the Sagnac effect

2002 ◽  
Vol 172 (8) ◽  
pp. 849 ◽  
Author(s):  
Irina A. Andronova ◽  
Grigorii B. Malykin
Keyword(s):  
Sagnac Effect ◽  
Physical Problems
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