Article

Efficient transmission of crossing dielectric slot waveguides.

Physics Department, Northeast Forestry University, Harbin, China.
Optics Express (impact factor: 3.59). 02/2011; 19(5):4756-61. pp.4756-61
Source: PubMed

ABSTRACT Transmission properties of two crossing dielectric slot waveguides (Si-Air-Si) are investigated using the finite difference in time domain method. Results show that the low transmission of this system mainly results from the reflection and radiation loss rather than the crosstalk. Using a simple method of filling up the crossing slots locally, the reflection, radiation losses and crosstalk are all greatly suppressed. With moderate parameters in this paper, the transmission efficient increases from 35.0% to more than 97% in a wide range of wavelength around 1.55 mm. The results and method presented in this paper may be very useful in the application of slot waveguide in micro and nano photonics.

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Keywords

crossing slots
 
dielectric slot waveguides
 
finite difference
 
low transmission
 
moderate parameters
 
nano photonics
 
radiation losses
 
simple method
 
transmission efficient increases
 
Transmission properties
 
wide range