All Outputs (13)

Analog signal processing/filtering (2011)
Presentation / Conference Contribution

In this talk, some of the metamaterials and devices that recently have been demonstrated in the authors' lab are discussed. These include graded-index lenses, birefringent elements that utilize a combination of geometry and material properties to sep... Read More about Analog signal processing/filtering.

Kerr nonlinearity in silicon beyond 2.35μm (2011)
Presentation / Conference Contribution

We present measurements of χ ^(3) in silicon in the 2.35 to 2.75μm interval, showing Kerr coefficients close to 1×10^( -18) m ^(2) /W. The results clearly identify silicon as a promising platform for nonlinear processes in the mid-infrared.

Nanophotonic devices and circuits (2011)
Presentation / Conference Contribution

Advances in nanoscale fabrication techniques in dielectric and metallic material systems has opened up new opportunities in photonics and plasmonics for solving long standing problems in information systems and telecommunication systems. In this talk... Read More about Nanophotonic devices and circuits.

Kerr nonlinearity in silicon beyond 2.35μm (2011)
Presentation / Conference Contribution

We present measurements of χ (3) in silicon in the 2.35 to 2.75μm interval, showing Kerr coefficients close to 1×10 -18 m 2 /W. The results clearly identify silicon as a promising platform for nonlinear processes in the mid-infrared.

Electrically pumped subwavelength metallo-dielectric laser with low threshold gain (2011)
Presentation / Conference Contribution

An electrically pumped subwavelength metallo-dielectric laser with a low threshold gain is demonstrated. To achieve low threshold gain, we selectively etch InP electrical channel diameter. Lasing operation is observed for temperatures up to 180 K.

Electrically pumped sub-wavelength metallodielectric pedestal pillar lasers (2011)
Journal Article

Electrically driven subwavelength scale metallo-dielectric pedestal pillar lasers are designed and experimentally demonstrated. The metallo-dielectric cavity significantly enhances the quality factor (Q > 1500) of the wavelength and subwavelength sca... Read More about Electrically pumped sub-wavelength metallodielectric pedestal pillar lasers.

Etch-free low loss silicon waveguides using hydrogen silsesquioxane oxidation masks (2011)
Journal Article
Nezhad, M., Bondarenko, O., Khajavikhan, M., Simic, A., & Fainman, Y. (2011). Etch-free low loss silicon waveguides using hydrogen silsesquioxane oxidation masks. Optics Express, 19(20), 18827-18832. https://doi.org/10.1364/OE.19.018827

An etch-free fabrication technique for creating low loss silicon waveguides in the silicon-on-insulator material system is proposed and demonstrated. The approach consists of local oxidation of a silicon-on-insulator chip covered with a e-beam patter... Read More about Etch-free low loss silicon waveguides using hydrogen silsesquioxane oxidation masks.

Third-order nonlinearity in silicon beyond 2350 nm (2011)
Journal Article

Measurement of the Kerr nonlinearity in silicon is reported in the 2350 nm to 2750 nm wavelength range, where three-photon absorption effect is present. The measurements confirm that the Kerr interaction strength is comparable to that in the near... Read More about Third-order nonlinearity in silicon beyond 2350 nm.

Active and passive composite metal-Dielectric nanophotonic devices (2011)
Presentation / Conference Contribution

We explore metallo-dielectric composite nanostructures for localization and resonant excitation of optical fields and investigate design, fabrication and testing of nanolasers. Integration with silicon photonics material platform is demonstrated.

Wide bandwidth, low loss 1 by 4 wavelength division multiplexer on silicon for optical interconnects (2011)
Presentation / Conference Contribution

We demonstrate an add/drop filter based on coupled vertical gratings on silicon. The concept is extended to implement a 1 by 4 wavelength division multiplexer with 3nm bandwidth, 1dB insertion loss and 16dB crosstalk suppression.

Fabrication approaches for metallo-dielectric nanolasers (2011)
Presentation / Conference Contribution

Metallo-dielectric lasers fabricated using different bonding techniques are discussed. Lasing at cryogenic and room temperatures is demonstrated.

Near-field measurement of amplitude and phase in silicon waveguides with liquid cladding (2011)
Presentation / Conference Contribution

This work demonstrates a technique that allows optical near-field characterization of devices while preserving their optical properties. To do so, a liquid overcladding is introduced to emulate the actual overcladding of the final operational device... Read More about Near-field measurement of amplitude and phase in silicon waveguides with liquid cladding.

Wide bandwidth, low loss 1 by 4 wavelength division multiplexer on silicon for optical interconnects (2011)
Journal Article

We demonstrate an add/drop filter based on coupled vertical gratings on silicon. Tailoring of the channel bandwidth and wavelength is experimentally demonstrated. The concept is extended to implement a 1 by 4 wavelength division multiplexer with 6nm... Read More about Wide bandwidth, low loss 1 by 4 wavelength division multiplexer on silicon for optical interconnects.