Polaroid Corporation

Linden Photonics, Inc.

Ramar Corporation

Fiber Optics Network Solutions Corp.

Jds Uniphase Corporation

Fiber Optic Network Solutions Corporation

Cfx Communication Systems,llc

Cfx Communications Systems, LLC

Amaresh Mahapatra

Michael J Noonan

Joseph E Nemecek

Stephen M O'Riorden

S Anantha Narayanan

Donald H McMahon

Norman A Sanford

Robert J Mansfield

Elias Snitzer

Peter F Hallemeier

James M Connors

William C Robinson

Roy W Miller

Hai Qing Li

Vincent E Stenger

Methods and apparatus for the removal of foreign matter, such as oil and dust, from the end faces of optical fiber and optical fiber connectors. Cleaning is effected by bringing carbon nanotube material into contact with an end face to create a differential adhesion in the proximity of the end face that more strongly attracts foreign matter residing on the end face to the carbon nanotube material than its attraction to the end face. The carbon nanotube material is applied with cleaning swabs or tapes that are used to clean end faces with swiping actions.

Method and apparatus for cleaning a fiber optic connector end face

A non-kink, non-hockling optical cable comprising an optical fiber capable of propagating light along its longitudinal axis. A buffer layer made of a soft plastic material surrounds the silica core and cladding, and a supplemental layer surrounds the buffer layer. The supplemental layer consists essentially of a liquid crystal polymer (LCP) material to enhance the tensile strength of the optical fiber. Finally, an encasing polymer layer with a breaking strain greater than 30%, surrounds the supplemental layer, to increase the flexibility of the optical cable.

Non-kink, non-hockling optical cable

A packaging system having a housing for providing a hermetically sealed interior space for receiving and supporting optoelectronic components. The housing has at least one section of wall comprising a layer of liquid crystal polymer (LCP). At least one hermetically sealed electrical port is formed in the LCP wall section over a predetermined area and comprises a layer of metal adhered to and overlying the predetermined area on the of the LCP wall section. An electrode passes through the metal from the exterior of the system to the interior space to provide an electrical communication path between the optoelectronic components and the exterior of said packaging system. A solder joint is formed between the electrode and the layer of metal to provide a hermetic connection between the layer of metal and the electrode to assure that the hermeticity of the housing remains unchanged with the electrical port present.

Hermetic electrical ports in liquid crystal polymer packages

An electrically conducting wire structure and a method for its manufacture where the wire structure has at least one elongated electrically conducting wire and a liquid crystal polymer coating of insulation formed by cross-head extrusion as a layer around the electrically conducting wire. An abrasion layer is preferably formed over the liquid crystal polymer coating, the elongated electrically conducting wire is selected from the group that includes copper, silver, tinned copper, aluminum, and conducting polymers, and the liquid crystal polymer material is a thermotropic thermoplastic.

Electrical conducting wire having liquid crystal polymer insulation

The invention relates to high-strength, abrasion-resistant optical fiber cable having a supplemental layer consisting essentially of a liquid crystal polymer (LCP) to enhance the cable's tensile strength and hermetically seal it, and an outermost encasing layer to protect the LCP supplemental layer from damage that could otherwise diminish the tensile strength or destroy the moisture barrier properties of the cable gained by adding the supplemental liquid crystal polymer layer. The encasing layer is preferably a thin layer of a smooth, non-crystalline thermoplastic that can be easily removed with chemicals that do not affect the properties of the supplemental layer so that the supplemental layer can be made accessible for promoting the formation of hermetically sealed interfaces between the cable and other structures. Cross-head extrusion methods for coating optical fibers with LCP and encasing layers are described along with laser and ultrasonic bonding techniques for fabricating hermetic packages.

Environmentally robust liquid crystal polymer coated optical fiber cable and its use in hermetic packaging

The present invention relates to integrated optic modulator devices and methods for their fabrication. Lithium niobate substrates have waveguides fabricated in them for propagating light energy, preferably in Mach Zhender architectures. The waveguides are bordered by adjacent electrode metallizations of low resistivity, such as copper and silver, to provide the devices with high gain bandwidth products to reduce the cost of drive electronics and simplify processing procedures. Gain bandwidth products exceed 4.5&times;10,.

Integrated optic modulators with high gain bandwidth product

Linear multi-output optical transmitter system

An electro-optic electromagnetic field sensor system includes an electro-optic sensor located at an electromagnetic field sensing site for detecting an intensity of an electromagnetic field. The sensor changes an optical measuring signal received from a laser source to an optical sensor signal representative of the electromagnetic field intensity. An optical bias adjust unit optically coupled to the laser source adjusts the bias operating point of the electro-optic sensor responsive to an electrical bias adjust signal which includes a test signal component. A detector optically coupled to the electro-optic sensor converts the optical sensor signal to an electrical sensor signal and detects a feedback signal indicative of the transfer function of the electro-optic sensor operating on the test signal component. A bias control circuit electrically coupled to the optical bias adjust unit generates the bias adjust signal responsive to the feedback signal. An optical input fiber couples the optical measuring signal from the laser source to the electro-optic sensor and an optical output fiber couples the optical sensor signal to the detector.

Electro-optic electromagnetic field sensor system with optical bias

An analog lightwave communication system comprises at least two optical transmitters for providing optical information signals at different optical wavelengths. A dense wavelength division multiplexer includes at least two inputs for receiving the optical information signals from the optical transmitters and multiplexes the optical information signals to a composite optical signal at an output. Each input of the dense wavelength division multiplexer comprises at least one optical resonant cavity comprising first and second reflecting materials spaced to permit resonance at a selected wavelength. A fiber optic transmission system coupled to the output of the dense wavelength division multiplexer receives the composite optical signal.

Wavelength division multiplexing system

A method for diffusing titanium into a single-crystal lithium niobate substrate and guided wave devices produced therefrom provide improved mode match with coupled fibers. Preferably, the titanium diffusion occurs at a diffusion temperature for a time between about 8 hours and about 18 hours. Outdiffusion of lithium oxide is allowed to occur during titanium diffusion. The outdiffused region, typically at least about 25 .mu.m, is much deeper than the titanium diffusion depth, typically about 5-10 .mu.m.

Guided wave device and method of fabrication thereof

A high fidelity, multi-output optical transmission system is configured utilizing a high power continuous wave YAG laser, multiport splitters, and linearized external modulation. An electro-optical modulator design in combination with a c.w. laser, power splits and couplers attains a multi-octave bandwidth transmitter possessing second and third order distortion characteristics of -60 db and a dynamic range &gt;-140 db/Hz. The system includes multiple individually modulated transmitter outputs which effectively provides bandwidth multiplication with full redundancy for increased transmission reliability.

A method for co-diffusing titanium and aluminum into a single-crystal lithium niobate substrate and guided wave devices produced therefrom are provided. Titanium diffused into the substrate forms a light guiding region. A layer of aluminum deposited over the light guiding region and diffused into the substrate buries the light guiding region below the substrate surface. In an alternate embodiment, a layer of aluminum forms a mode shaping region which surrounds the light guiding region on two sides. The mode shaping region has ordinary and extraordinary indices of refraction less than the substrate such that mode mismatch between a device fabricated thereby and an externally coupled fiber is reduced. The aluminum can be diffused into LiNbO.sub.3 at a much lower temperature without affecting diffused titanium guides. Preferably, the titanium diffusion occurs at about 1000.degree. to about 1100.degree. C. while further aluminum diffusion occurs at a lower temperature in the range of about 900.degree. to 950.degree. C.

Growing community of inventors

Acton, MA, United States of America

Amaresh Mahapatra