Compact Z-add-drop wavelength filters for long-range surface plasmon polaritons

Broadly wavelength tunable bandpass filters based on long-range surface plasmon polaritons.

We report a new kind of broadly tunable optical bandpass filters based on unusual properties of long-range surface plasmon polaritons. A 0.004 variation in the refractive index of the dielectric medium translates into 210 nm of bandpass tuning at telecom wavelengths. The tuning mechanism reported here may be used to create compact and widely tunable optical systems and other plasmonic component...

Resonator channel drop filters in a plasmon-polaritons metal.

Channel drop filters with ring/disk resonators in a plasmon-polaritons metal are studied. It shows that light can be efficiently dropped. Results obtained by the finite difference time domain method are consistent with those from the coupled mode theory. It also shows, without considering the loss of the metal, that the quality factor for the channel drop system can be very high. The quality fa...

Compact gradual bends for channel plasmon polaritons.

We report the design, fabrication and characterization of compact gradual bends for channel plasmon polaritons (CPPs) being excited at telecom wavelengths. We obtain high-quality near-field optical images of CPP modes propagating along a bent V-groove in gold, which indicate good CPP mode confinement in the groove and efficient guiding around the compact S-bend connecting two 5-mum-offset groov...

Wavelength Add - Drop Multiplexing for Minimizing SONET

Modified surface plasmon polaritons for the nanoconcentration and long-range propagation of optical energy

We propose a new surface plasmon polariton concept for the nanoconcentration and long-range propagation of optical energy. The propagation loss from the mode can be greatly decreased, and the mode nanoconfinement can be simultaneously maintained, by appropriately modifying the field distribution of the surface plasmon polaritons. Furthermore, we present a metal nanowire placed in a dielectric h...