Sol-gel multimode interference power splitters

Fardad, M. A.; Fallahi, Mahmoud

doi:10.1109/68.766789

Cited by 32 publications

(20 citation statements)

References 5 publications

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“…The phases given by Eqs. (3,4) are not important for the output signal, because the absolute phase of each output signal channel is meaningless. These phases, however, are important for the beam combiner when a reverse configuration of Fig.…”

Section: Waveguide Beam Splitter/combinermentioning

confidence: 99%

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Rediscovering the waveguide beam splitter/combiner

2002

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By establishing the relation of Talbot self-imaging effects in free space and in waveguide, we have rediscovered the self-imaging diffraction effect in waveguide with the view of Talbot effect in free-space. We have found that the diffraction theory of Talbot effect in free space do give us a set of simplified equations, that can't be obtained with the theory of multimode interference (MMI), beam propagation method, etc.. We show that simple equations for explanation of Talbot self-imaging effect in free space can be used to design the waveguide beam splitters and combiners. Thus, the heavy designing work with the previous multimode interference method can be released with the new simple equations. More importantly, new configurations of waveguide beam splitters and combiners can be designed with the simple equations. The importance of rediscovering waveguide beam splitter is that a complete new and clear physical picture can explain the complex self-imaging phenomena in waveguide, which should be highly interesting for practical applications.

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Section: Waveguide Beam Splitter/combinermentioning

confidence: 99%

“…(3,4) for calculation of the number L of phase level. Here we present a simple primedecomposing rule to find out the number of phase levels.…”

Section: Waveguide Beam Splitter/combinermentioning

confidence: 99%

Rediscovering the waveguide beam splitter/combiner

2002

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“…For a particular mode ®(x) = c1 exp('yx) (7) Where 7, are roots of equation (6). (6) give simultaneously the mode shape and natural frequency of oscillations.…”

Section: Configurationsmentioning

confidence: 99%

<title>Micro-opto-electro-mechanical (MOEM) vibration sensor</title>

et al. 2000

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The combination of Integrated Optics with micro-mechanical structures on silicon offers immense potential for smart structure applications. One such application is sensing and mapping of vibration and vibrational modes. In the present proposal, a cantilever formed by bulk micro machining of <100>. Silicon and optical waveguides formed by sol-gel process is considered. Among the various configurations possible, an optical directional coupler located close to foot of the cantilever is analysed in detail. Analytical and simulation result using optical coupled mode theory to obtain the power transfer that is dependent on cantilever vibrations are presented.

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“…The combination of SiO 2 and Al 2 O 3 also gives the ability to improve mechanical properties and to extend the wear life [3]. Due to these attributes, the SiO 2 -Al 2 O 3 film is very promising for the fabrication of integrated optical devices [4][5][6], especially of the waveguide devices such as multimode interference power splitters [5]. To realize the practical applications, a common requirement is that the film thickness should be more than 2 mm [6,7].…”

Section: Introductionmentioning

confidence: 99%