Ii-vi Incorporated

Finisar Corporation

New Focus, Inc.

Manish Sharma

Ian Peter McClean

Mark H Garrett

John David

Aravanan Gurusami

Gil Cohen

Ruipeng Sun

Massimo Martinelli

Evan D H Green

James Douglas Struttmann

Daniel Philip Schott

Donald G Dyke

Theodore William Scone

An optical amplifier assembly for determining a parameter of an optical fiber configured to amplify an optical signal being propagated therethrough, the assembly comprising: at least one amplifier pump light source assembly configured to transmit light at a plurality of wavelengths into the optical fiber; a receiver configured to receive light that has propagated through at least part of the optical fiber; and a processor configured to determine the parameter of the optical fiber based on the received light.

Method and apparatus for determining optical fibre characteristics

An optical switching device has multiple input ports and multiple output ports and is capable of switching a wavelength component from any of the input ports to any of the output ports. The optical switching device is configured with beam steering arrays that are controlled to provide the switching from any of the input ports to any of the output ports. The beam steering arrays may be microelectromechanical (MEMS) mirror arrays or liquid-crystal on silicon (LCOS) panels. In addition, an array of beam-polarizing liquid-crystal elements provides wavelength-independent attenuation.

Wavelength selective switch

Fiber-optic communications systems are provided for optical communications networks. Fiber-optic communications links may be provided that use spans of transmission fiber to carry optical data signals on wavelength-division-multiplexing channels at different wavelengths between nodes. An apparatus and method are disclosed to use one optical light source per node to perform OTDR and LCV to satisfy safety concerns and accelerate the verification of the integrity of optical fiber links, before the application of high Raman laser powered light sources to a fiber link. A system using only one receiver per node is also disclosed.

Embedded optical time domain reflectometer for optically amplified links

A multicast optical switch includes a free-space optical assembly of discrete splitters, cylindrical optics, and a linear array of reflective switching devices, such as microelectromechanical systems (MEMS) mirrors, to provide low-loss, high-performance multicast switching in a compact configuration. The assembly of optical splitters may include multiple planar lightwave circuit splitters or a multi-reflection beam splitter that includes a linear array of partially reflecting mirrors, each of a different reflectivity.

Multicast optical switch

Various embodiments of methods and systems for reducing the amount of contamination that enters the optical path of an optical device are disclosed. In one embodiment, an optical device includes a housing containing at least one optical component (active, passive, or both) that is configured to process an optical signal. The optical device also includes a first sleeve that encloses a portion of an optical fiber, an optical path configured to convey the optical signal between the optical component(s) and the end of the optical fiber. A flexible seal contacts a portion of the surface of the first sleeve and contacts the surface of a portion of the housing through which the first sleeve passes.

Flexible seal to reduce optical component contamination

Apparatus and associated method for aligning optical components including lenses, filters, lasers, fiber optics, etc. The apparatus aligns a first optic element and a second optic element and includes a frame and a sleeve. The frame defines a frame bore along a longitudinal axis thereof. The sleeve defines an eccentric bore configured to contain the first optic element or the second optic element. The sleeve is rotatably coupled in the frame bore to align the first optic element with the second optic element in a plane intersected by the longitudinal axis.

Growing community of inventors

Morgan Hill, CA, United States of America

Manish Sharma