Low-cost 1×2 plastic optical beam splitter using a V-type angle polymer waveguide for the automotive network

2011 ◽  
Vol 50 (7) ◽  
pp. 075002 ◽  
Author(s):  
Hyoung-Jun Park
Sensors ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 2889 ◽  
Author(s):  
Johanna-Gabriela Walter ◽  
Alina Eilers ◽  
Lourdes Alwis ◽  
Bernhard Roth ◽  
Kort Bremer

We present a surface plasmon resonance (SPR) biosensor that is based on a planar-optical multi-mode (MM) polymer waveguide structure applied for the detection of biomolecules in the lower nano-molar (nM) range. The basic sensor shows a sensitivity of 608.6 nm/RIU when exposed to refractive index changes with a measurement resolution of 4.3 × 10−3 RIU. By combining the SPR sensor with an aptamer-functionalized, gold-nanoparticle (AuNP)-enhanced sandwich assay, the detection of C-reactive protein (CRP) in a buffer solution was achieved with a response of 0.118 nm/nM. Due to the multi-mode polymer waveguide structure and the simple concept, the reported biosensor is well suited for low-cost disposable lab-on-a-chip applications and can be used with rather simple and economic devices. In particular, the sensor offers the potential for fast and multiplexed detection of several biomarkers on a single integrated platform.


Sensors ◽  
2019 ◽  
Vol 19 (12) ◽  
pp. 2821 ◽  
Author(s):  
Jhonattan C. Ramirez ◽  
Lucas H. Gabrielli ◽  
Laura M. Lechuga ◽  
Hugo E. Hernandez-Figueroa

This work implements and demonstrates an interferometric transducer based on a trimodal optical waveguide concept. The readout signal is generated from the interference between the fundamental and second-order modes propagating on a straight polymer waveguide. Intuitively, the higher the mode order, the larger the fraction of power (evanescent field) propagating outside the waveguide core, hence the higher the sensitivity that can be achieved when interfering against the strongly confined fundamental mode. The device is fabricated using the polymer SU-8 over a SiO2 substrate and shows a free spectral range of 20.2 nm and signal visibility of 5.7 dB, reaching a sensitivity to temperature variations of 0.0586 dB/ ∘ C. The results indicate that the proposed interferometer is a promising candidate for highly sensitive, compact and low-cost photonic transducer for implementation in different types of sensing applications, among these, point-of-care.


Author(s):  
Takara Sugimoto ◽  
Takanori Shimizu ◽  
Yuji Akimoto ◽  
Masataka Noguchi ◽  
Jun'etsu Sone ◽  
...  

2020 ◽  
Vol 10 (4) ◽  
pp. 353-363
Author(s):  
Lanting Ji ◽  
Shuqing Yang ◽  
Rongna Shi ◽  
Yujie Fu ◽  
Juan Su ◽  
...  

Abstract A waveguide coupled surface plasmon sensor for detection of liquid with high refractive index (RI) is designed based on polymer materials. The effects of variation of the thickness of the Au film, polymethyl methacrylate (PMMA) buffer, and waveguide layer on the sensing performance of the waveguide are comprehensively investigated by using the finite difference method. Numerical simulations show that a thinner gold film gives rise to a more sensitive structure, while the variation of the thickness of the PMMA buffer and waveguide layer has a little effect on the sensitivity. For liquid with high RI, the sensitivity of the sensor increases significantly. When RI of liquid to be measured increases from 1.45 to 1.52, the sensitivity is as high as 4518.14nm/RIU, and a high figure of merit of 114.07 is obtained. The waveguide coupled surface plasmon RI sensor shows potential applications in the fields of environment, industry, and agriculture sensing with the merits of compact size, low cost, and high integration density.


2012 ◽  
Vol 21 (6) ◽  
pp. 064220 ◽  
Author(s):  
Qing-Yi Zhu ◽  
Yong-Qi Fu ◽  
De-Qing Hu ◽  
Zhi-Min Zhang

1993 ◽  
Vol 21 (4) ◽  
pp. 439-444 ◽  
Author(s):  
T Pfau ◽  
C. S Adams ◽  
J Mlynek
Keyword(s):  

2015 ◽  
Vol 23 (9) ◽  
pp. 11985 ◽  
Author(s):  
Jhonattan C. Ramirez ◽  
Laura M. Lechuga ◽  
Lucas H. Gabrielli ◽  
Hugo E. Hernandez-Figueroa

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