Microwave Studies

Single-band antenna for GHz
Dual- and triple-band antenna for GHz

Radiation profiles of antennas
Antenna for THz
Frequency selective surfaces
Metasurfaces

Surface-integrated antenna studies

Partially reflecting surfaces
Frequency filter designs

Polarization selection

Nanophotonics

Photonic crystals by self-assembly
Dual stopband
Inverse photonic crystals
Lasing in photonic crystals
Photonic crystal waveguides
Negative refraction, supercollimation
Photonic crystal heterostructures
Localized surface plasmons
Photonic crystal cavities
Polarization effects
Tamm plasmons

Surface plasmon polariton

Bio-sensor studies

Fiber optics

High-power EDFA
Fiber loop mirror
Erbium-doped fiber laser (EDFL)
Tunable EDFL
Mode-locked EDFL
Stimulated Brillouin Scattering in fibers
Chaos in EDFL
Four wave mixing and Broadband EDFL
Temporal coherence in broadband EDFL
Intermodal four wave mixing

Saturable absorption in EDF
Bistable EDFL

Intra-cavity saturable absorption in fiber laser

Patterned surfaces, waveguides

Patterning by soft imprint lithography

Hydrophobic surfaces

Anti-reflecting surfaces

Ultrashort pulse micromachining

Optical waveguides

High- and anti-reflection coatings

Partial reflectors

Coated lenses for NIR range

Sub-wavelength gratings

Form-birefringence studies