Results 21 to 30 of about 1,735,900 (297)

Calibration of an InP-Based Monolithically Integrated Optical Pulse Shaper

open access: yesIEEE Photonics Journal, 2013
We present the calibration method and characterization of a monolithically integrated semiconductor optical pulse shaper. The photonic integrated circuit has been realized in an InP-based generic photonic foundry process.
M. S. Tahvili   +5 more
doaj   +1 more source

High Extinction Ratio Magneto-Optical Fiber Modulator Based on Nanoparticle Magnetic Fluids

open access: yesIEEE Photonics Journal, 2012
A novel magneto-optical fiber modulator with a high extinction ratio (ER) based on a polarization interference structure is proposed. A magnetic fluid (MF) film and a section of a polarization-maintaining fiber (PMF) are inserted into the structure to ...
Peng Zu   +7 more
doaj   +1 more source

Design and Demonstration of Apodized Comb Filters on SOI

open access: yesIEEE Photonics Journal, 2012
We report on the design, modeling, and characterization of apodized comb filters in the silicon-on-insulator platform. These devices are based on sampled gratings, wherein the comb response is generated by a convolution of a regular grating by a ...
Venkat Veerasubramanian   +5 more
doaj   +1 more source

Analysis of Lasing in Dye-Doped Photonic Crystals

open access: yesIEEE Photonics Journal, 2013
Recently, we experimentally demonstrated room-temperature lasing of self-assembled opal photonic crystal (PhC) made of rhodamine-B-doped polystyrene colloids.
M. Srinivas Reddy   +6 more
doaj   +1 more source

Using a $\hbox{Si}_{3}\hbox{N}_{4}$ Ring Resonator Notch Filter for Optical Carrier Reduction and Modulation Depth Enhancement in Radio-Over-Fiber Links

open access: yesIEEE Photonics Journal, 2013
Optical carrier reduction via the use of a Si3N4 ring resonator notch filter (RRNF) is proposed and experimentally demonstrated as a means for improving the modulation efficiency in 10-GHz radio-over-fiber (RoF) links.
A. Perentos   +8 more
doaj   +1 more source

Numerical Study of the Near-Field and Far-Field Properties of Active Open Cylindrical Coated Nanoparticle Antennas

open access: yesIEEE Photonics Journal, 2011
A very electrically small, active open cylindrical coated nanoparticle model is constructed, and its electromagnetic properties are investigated in the visible frequency band.
Junping Geng   +3 more
doaj   +1 more source

On Green's Formula [PDF]

open access: yesProceedings of the National Academy of Sciences, 1940
Not ...
openaire   +2 more sources

All-Optical Sensing of the Components of the Internal Local Electric Field in Proteins

open access: yesIEEE Photonics Journal, 2012
Here, we present a new all-optical method of interrogation of the internal electric field vector inside proteins. The method is based on experimental evaluation of the permanent dipole moment change upon excitation and the pure electronic transition ...
M. Drobizhev   +3 more
doaj   +1 more source

Photonic Generation of Few-Cycle Millimeter-Wave Pulse Using a Waveguide-Based Photonic-Transmitter-Mixer

open access: yesIEEE Photonics Journal, 2012
We demonstrate a novel technique for photonic generation of few-cycle millimeter-wave (MMW) pulse using a WR-10 waveguide and near-ballistic unitraveling carrier photodiode (NBUTC-PD)-based photonic-transmitter-mixer (PTM).
Jin-Wei Shi   +6 more
doaj   +1 more source

Cascaded Photonic Crystal Fiber Interferometers for Refractive Index Sensing

open access: yesIEEE Photonics Journal, 2012
We present a cascaded fiber device based on photonic crystal fiber (PCF) interferometers for refractive index (RI) sensing. The PCF modal interferometers have microbubbles at both sides of the splice regions.
Jun Long Lim   +3 more
doaj   +1 more source

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