Plastic optical fibres (POF) in sensing: current status and prospects (Invited Paper)

Kalymnios, D.

doi:10.1117/12.623250

Cited by 14 publications

(11 citation statements)

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“…Fluorescence is one of the most used techniques in bio/chemical sensors [4]. Among the many possibilities existing to develop fiber-based fluorescence sensors, the use of polymer optical fibers (POFs) has been notably increased in the last years, since they have shown a better performance when compared to glass fibers [5], to the point that fiber optic sensors based on POFs have become widespread [6].…”

Section: Introductionmentioning

confidence: 99%

Microfiber as light source for exciting fluorescence in a polymer optical fiber

Rodríguez-Schwendtner

Navarrete

Díaz-Herrera

et al. 2016

Sensors and Actuators B: Chemical

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Section: Introductionmentioning

confidence: 99%

Microfiber as light source for exciting fluorescence in a polymer optical fiber

Rodríguez-Schwendtner

Navarrete

Díaz-Herrera

et al. 2016

Sensors and Actuators B: Chemical

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“…Recently, being the composition of the polymer optical fiber (POF), PMMA has been introduced to the communication and sensing applications. 5 Especially in oceanographic applications, glass devices can be easily occupied and grown by marine organisms, causing malfunction or false signals. But PMMA is inhospitable to them.…”

Section: Introductionmentioning

confidence: 99%

Waveguide fabrication in PMMA using a modified cavity femtosecond oscillator

2007

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Poly Methyl Methacrylate (PMMA) is an advantageous material than glass in oceanographic sensing applications because of its inhospitality for marine organisms. Waveguide sensors fabricated in PMMA are often used to measure the parameters in ocean such as PH, CO 2 , O 2 concentrations, etc. A tightly-focused femtosecond laser is often used to produce such a waveguide or even more complicated structures through the nonlinear effect in the bulk of PMMA, with pulse energy at µJ or mJ level. And such a laser system requires the amplifier from chirped-pulse amplification (CPA). The oscillator itself can produce pulse energy only at nJ level which is under the threshold of nonlinear effect. However, in our experiment, a modification to the oscillator cavity, which elongates the cavity length approximately 3 times and as a result, decreases the repetition rate from 93mHz to 32 mHz, can increase the pulse energy to 15 nJ. Under a tight focusing lens (100x 1.40 microscope objective), such an intensity exceeds the nonlinear threshold of PMMA. Thus, waveguide can be fabricated in PMMA using only a femtosecond oscillator and oceanographic sensors can be also made by this simple technique.

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“…In sensor development, POF has established wide use in multimode intensity-based sensor applications [2]. These are some of the POF applications well known, however the used of POF technology for physical access to restricted facilities has not been ventured yet.…”

Section: Introductionmentioning

confidence: 99%

Metal-Based 1ã2 and 1ã4 Asymmetric Plastic Optical Fiber Couplers for Optical Code Generating Devices

Ehsan¹,

Shaari²,

Rahman³

2010

PIER

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Abstract-An optical code generating device has been developed based on 1×2 and 1×4 asymmetric plastic optical fiber (POF) couplers. The code generating device provides a unique series of output power which are successively used as an optical code in a portable optical access-card system. The system is designed where the asymmetric POF coupler is embedded in an all passive portable unit. This device utilizes a tap-off ratio (TOFR) technique based on a simple variation of the tap width of an asymmetric Y-branch splitter design. A hollow-type waveguide structure is used where it eliminates the use of polymeric material for the waveguide core and allows simple fabrication and assembling of the device. The asymmetric POF coupler has been fabricated on metal-based materials using machining technique. The results for the simulated and fabricated 1×2 asymmetric couplers show the same linear characteristics between the TOFR and the tap width. The simulated devices shows a TOFR variation from 18.6% to 49.9% whereas the TOFR for the fabricated metal-based devices varies from 10.7% up to 47.7%, for a tap width of 500 µm to 1 mm. The 1 × 4 coupler designed using simple cascading of a Y-branch splitter with two 1 × 2 asymmetric couplers has been fabricated and shows similar characteristics as that of the designed 1 × 4 devices. The insertion loss for the 1 × 2 asymmetric coupler at the tap line varies from 9 dB to Corresponding author: A. A. Ehsan (aaehsan@eng.ukm.my).2 Ehsan, Shaari, and Abd Rahman 16 dB whereas for the bus line, the insertion loss is about 9 ± 0.8 dB. The insertion loss for the 1 × 4 asymmetric coupler at the output ports varies from 14 dB to 22 dB.

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Plastic optical fibres (POF) in sensing: current status and prospects (Invited Paper)

Cited by 14 publications

References 0 publications

Microfiber as light source for exciting fluorescence in a polymer optical fiber

Microfiber as light source for exciting fluorescence in a polymer optical fiber

Waveguide fabrication in PMMA using a modified cavity femtosecond oscillator

Metal-Based 1ã2 and 1ã4 Asymmetric Plastic Optical Fiber Couplers for Optical Code Generating Devices

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Plastic optical fibres (POF) in sensing: current status and prospects (Invited Paper)

Cited by 14 publications

References 0 publications

Microfiber as light source for exciting fluorescence in a polymer optical fiber

Microfiber as light source for exciting fluorescence in a polymer optical fiber

Waveguide fabrication in PMMA using a modified cavity femtosecond oscillator

Metal-Based 1ã2 and 1ã4 Asymmetric Plastic Optical Fiber Couplers for Optical Code Generating Devices

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Product

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Metal-Based 1ã2 and 1ã4 Asymmetric Plastic Optical Fiber Couplers for Optical Code Generating Devices