USA As Represented by Secretary of the Navy

Janet W Lou

Marc Currie

Carl A Villarruel

Thomas F Carruthers

Ross Schermer

Igor Vurgaftman

Thomas S Clark

An apparatus for creating sheathed flow includes an inlet section comprising an array of tubes including at least one sheath inlet port and a sample inlet port, a flow focusing section downstream from the inlet section, an optical access section downstream from the flow focusing region and comprising opposing flat surfaces, and an outlet section downstream from the optical access section, wherein the apparatus is operable to create a sheathed flow around a fluid introduced into the sample inlet port and to maintain the sheathed flow through the optical access section. Applications of the apparatus and method include bead/particle counting, flow cytometry, waveguiding, and fluid control.

Tubular array for fluidic focusing with integrated optical access region

The application of an optical beam redirects sheathed micro-fluidic flow without direct interaction with the sample. The hydrodynamic properties of the sheath are locally modified due to optical absorption and heating, resulting in a spatial shift of the sample flow. The technique can result in up to 100 &#x3bc;m shift at peak flow velocities of 19 mm/sec.

Method of changing fluid flow by using an optical beam

A method and system for modifying the detected phase of a signal by driving a photodetector into saturation. This system and method differs from current manual and electrical microwave phase modification by using saturation means for modifying the phase. The system and method may use a plurality of the signal generators for saturating the photodetector.

Method for optical control of microwave phase

An electro-optic clock recovery circuit comprising an electro-optic modulator circuit operatively coupled to; a photodetector circuit; a buffer circuit operatively coupled to said photodetector circuit; a voltage controlled oscillator operatively coupled to said buffer circuit and to said electro-optic modulator circuit; wherein the electro-optic modulator circuit receives and modulates a multi-channel input data stream, the photodetector circuit responsive to the modulated input data stream drives the voltage controlled oscillator in a phase locked loop through the buffer circuit, and the modulator circuit is responsive to the voltage controlled oscillator and is driven at a harmonic of the voltage controlled oscillator. A method for the recovery of a single channel clock rate from a optical time division multiplexed data stream whose data rate is a multiple of the base rate comprising the steps of: modulating a multi-channel data stream with an electro-optic modulator circuit, detecting the modulated data steam with a photodetector circuit, controlling the frequency of a voltage controlled oscillator with the voltage associated with the photodetector circuit; driving the electro-optic modulator circuit with the output of the voltage controlled oscillator wherein the transmission window of the electro-optic modulator is toggled at a harmonic of the frequency of said voltage controlled oscillator.

High speed electro-optic clock recovery circuit

A multiple wavelength laser apparatus is taught to select wavelengths for simultaneous generation of short pulses at multiple wavelengths having application in wavelength-division-multiplexed communications systems, photonic microwave systems, and pump-probe applications. The multiple wavelength laser comprises an optical fiber lasing material, a laser pump source connected to said lasing material for outputting coherent light, a splitter for dividing said coherent light into parallel paths of differing wavelengths, parallel band pass filters for selecting multiple wavelengths, and parallel Faraday mirrors for operating the multiple wavelength laser in a single polarization state.

Growing community of inventors

Alexandria, VA, United States of America

Janet W Lou