Fiber optic refractometer based in multimode interference effects (MMI) using Indium Tin Oxide (ITO) coating

Rodríguez-Rodríguez, Adolfo Josué; Domínguez-Cruz, René Fernando; May-Arrioja, Daniel A.; Matı́as, Ignacio R.; Arregui, Francisco J.; Ruiz-Zamarreno, Carlos

doi:10.1109/icsens.2015.7370600

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…In the coreless segment it is possible to find partial images at specific distances from the splice between the SMF and the MMF-NC segment [3] and [6]. This phenomenon is called multimodal interference effect [12]. The equation that rules the lengths where these images are created is expressed as…”

Section: A Principle Of Operationmentioning

confidence: 99%

Low Cutoff Wavelength Etched SMS Structures Towards Verification of the Quality of Automotive Antifreeze

Rodríguez-Rodríguez

Zamarreño

et al. 2020

IEEE Sensors J.

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Optical fiber single modemultimodesingle mode (SMS) structures can be used as wavelength detection-based sensors. In this work, we focus on the performance at short wavelengths, where optical sources and detectors are less expensive. Here, a self-image band with a high transmission power is monitored in this short-wavelength range. In addition, the diameter and the length of the SMS structure have been optimized in order to improve the sensitivity of the device. In this sense, a maximum refractive index sensitivity of 305 nm/RIU was achieved by an etched SMS with a diameter of 34 µm. Furthermore, the obtained devices were used for testing the quality of automotive coolant and antifreeze liquid.

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Section: A Principle Of Operationmentioning

confidence: 99%

Low Cutoff Wavelength Etched SMS Structures Towards Verification of the Quality of Automotive Antifreeze

Rodríguez-Rodríguez

Zamarreño

et al. 2020

IEEE Sensors J.

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“…Due to the MMI effect, both transmission and attenuation bands are obtained in the optical spectrum. At certain lengths, where the phase difference is multiple of 2π, self-images are obtained, exact replicas of the input field [20,21]. The transmission bands obtained by the self-imaging effect can be controlled by the dimension of the MMF segment.…”

Section: Sms Structure: Modes Of Operationmentioning

confidence: 99%

Sensitivity enhancement experimental demonstration using a low cutoff wavelength SMS modified structure coated with a pH sensitive film

Rodríguez-Rodríguez

Villar

Zamarreño

et al. 2018

Sensors and Actuators B: Chemical

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“…On-chip MMI devices have been widely used for signal processing applications such as waveguide division multiplexing and power splitting [ 24 , 30 ]. A few on-chip MMI sensors were also proposed [ 31 , 32 ], including a silicon-based MMI temperature sensor [ 33 ]. After presenting the results, there will be a comparison between this work and state of the art MMI sensors.…”

Section: Introductionmentioning

confidence: 99%

Integrated Lab-on-a-Chip Optical Biosensor Using Ultrathin Silicon Waveguide SOI MMI Device

El‐Sayed

Sherif

Aljaber

et al. 2020

Sensors

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Waveguides with sub-100 nm thickness offer a promising platform for sensors. We designed and analyzed multimode interference (MMI) devices using these ultrathin platforms for use as biosensors. To verify our design methodology, we compared the measured and simulated spectra of fabricated 220-nm-thick MMI devices. Designs of the MMI biosensors based on the sub-100 nm platforms have been optimized using finite difference time domain simulations. At a length of 4 mm, the 50-nm-thick MMI sensor provides a sensitivity of roughly 420 nm/RIU and with a figure of merit (FOM) definition of sensitivity/full-width-at-half-maximum, the FOM is 133. On the other hand, using a thickness of 70 nm results in a more compact design—only 2.4 mm length was required to achieve a similar FOM, 134, with a sensitivity of 330 nm/RIU. The limits of detection (LOD) were calculated to be 7.1 × 10−6 RIU and 8.6 × 10−6 RIU for the 50 nm and the 70-nm-thick sensor, respectively. The LOD for glucose sensing was calculated to be less than 10 mg dL−1 making it useful for detecting glucose in the diabetic range. The biosensor is also predicted to be able to detect layers of protein, such as biotin-streptavidin as thin as 1 nm. The ultrathin SOI waveguide platform is promising in biosensing applications using this simple MMI structure.

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Fiber optic refractometer based in multimode interference effects (MMI) using Indium Tin Oxide (ITO) coating

Cited by 3 publications

References 18 publications

Low Cutoff Wavelength Etched SMS Structures Towards Verification of the Quality of Automotive Antifreeze

Low Cutoff Wavelength Etched SMS Structures Towards Verification of the Quality of Automotive Antifreeze

Sensitivity enhancement experimental demonstration using a low cutoff wavelength SMS modified structure coated with a pH sensitive film

Integrated Lab-on-a-Chip Optical Biosensor Using Ultrathin Silicon Waveguide SOI MMI Device

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