Analysis of lossy mode cut-off conditions in planar waveguides with semiconductor guiding layer

Marciniak, Magdalena; Grzegorzewski, J.; Szustakowski, Mieczysław

doi:10.1049/ip-j.1993.0040

Cited by 72 publications

(54 citation statements)

References 12 publications

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“…Consequently, evanescent wave is generated and coupling of evanescent wave with thin film modes takes place. In case of planar waveguides, the effect of thin film thickness on modes and the cut-off thickness that leads to attenuation maxima of LMR was reported in [2]. LMR can also be generated keeping thickness of the film constant and using broad electromagnetic spectra of wavelengths where a mode is supposed to be near cut-off at a particular wavelength.…”

Section: Lmr Fiber Optic Sensorsmentioning

confidence: 99%

“…In order to modulate the properties of light for various applications, semiconductor and metal-clad optical waveguides were introduced [1]- [4]. Some authors [2], [3] reported that semiconductor and metal clad introduce losses in the propagation of light, where the losses depend upon the properties of the thin film material. Thin film materials can be classified into three categories.…”

Section: Introductionmentioning

confidence: 99%

“…The phase matching condition requires equality of the real part of propagation constants of lossy modes and waveguide modes. When the lossy modes are near cut-off, LMR is generated at a particular value of thin film thickness [2]. This gives rise to attenuation dips in the transmission spectra.…”

Section: Introductionmentioning

confidence: 99%

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Lossy Mode Resonance (LMR) Based Fiber Optic Sensors: A Review

Paliwal

Jelonnek

2015

IEEE Sensors J.

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In the past few decades, surface plasmon resonance (SPR) phenomenon along with optical fiber technology has emerged as a major area of research among the fiber optic sensing research groups. On the other hand, lossy mode resonance (LMR) is another kind of resonance phenomenon recently exploited for fiber optic sensing. LMR has several advantages over the well established SPR such as, free from specific polarization of light and capability of multiple LMR generation. Since LMR phenomenon is nascent for researchers and there are no review articles available till date, in this paper, we review the LMR phenomenon in applications involving sensing and wavelength filtering.

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Section: Lmr Fiber Optic Sensorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lossy Mode Resonance (LMR) Based Fiber Optic Sensors: A Review

Paliwal

Jelonnek

2015

IEEE Sensors J.

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“…Light propagation through semiconductor cladded waveguides has been studied in [6], where attenuation maxima of the light propagating through the optical waveguide can be obtained for specific thickness values and at certain wavelengths or incidence angles. This is due to a coupling between waveguide modes and a particular lossy mode of the semiconductor thin-film [7]. Since the phenomenon occurs when the lossy mode of the thin-film is near cut-off, there are thin-film thickness values that lead to transmission attenuation maxima [6].…”

Section: Introductionmentioning

confidence: 99%

Design rules for lossy mode resonance based sensors

et al. 2012

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Lossy mode resonances can be obtained in the transmission spectrum of cladding removed multimode optical fiber coated with a thin-film. The sensitivity of these devices to changes in the properties of the coating or the surrounding medium can be optimized by means of the adequate parameterization of the coating refractive index, the coating thickness, and the surrounding medium refractive index. Some basic rules of design, which enable the selection of the best parameters for each specific sensing application, are indicated in this work.

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“…the optical waveguide and the surrounding medium in contact with the thinfilm) [7]. Lossy mode resonances (LMRs) occur when the real part of the thin-film permittivity is positive and higher in magnitude than both its own imaginary part and the real part of the permittivity of material surrounding the thin-film [7,8]. As a rule of design, the material should own a high refractive index real part and not null imaginary part as it has been demonstrated experimentally by adding ITO [9], TiO 2 [10] or In 2 O 3 [11] coatings.…”

Section: Introductionmentioning

confidence: 99%