1
Arthur R Nelson: Fiber optic sensors for simultaneously detecting different parameters in a single sensing tip. Aetna Telecommunications Laboratories, Weingarten Schurgin Gagnebin & Hayes, June 11, 1985: US04523092 (55 worldwide citation)

A fiber optic sensor for sensing pressure, temperature, voltage and other environmental parameters. A fiber is terminated in a series of semiconductor layers, each absorbing light as a function of the sensed parameters at a different wavelength. Light is transmitted down the fiber with plural freque ...


2
Arthur R Nelson: Fiber optic mass sensor. Aetna Telecommunications Laboratories, Weingarten Schurgin Gagnebin & Hayes, January 15, 1985: US04493212 (23 worldwide citation)

An optical sensing system for detecting a physical parameter such as acceleration, temperature or pressure through parameter induced motion of an optical element in a fiber optic path. The motion of the optical element varies the light transmission through the path in which the optical element defin ...


3
Glenn R Elion: Process for providing optical fibers conditioned for hostile environments and fibers thus formed. Aetna Telecommunications Laboratories, Weingarten Schurgin Gagnebin & Hayes, September 25, 1984: US04473599 (22 worldwide citation)

A process for manufacturing an optical fiber having a ceramic coating applied at the preform stage or drawn fiber stage wherein the coating hermetically seals the fiber against penetration of environmental gases and fluids and increases the fiber tensile strength, and a fiber produced by the process ...


4
Glenn R Elion: Optical fiber protection by powder filled coatings. Aetna Telecommunications Laboratories, Weingarten Schurgin Gagnebin & Hayes, June 25, 1985: US04525026 (17 worldwide citation)

The optically transmissive fiber of a fiber optic cable is protected from degradation by corrosion from environmental fluids in high pressure and/or temperature environments. The light transmitting fiber is surrounded with one or more protective layers which contain finely divided particles, typical ...


5
Dilip K Nath: Aluminum oxide optical fiber coating. Aetna Telecommunications Laboratories, Weingarten Schurgin Gagnebin & Hayes, September 10, 1985: US04540601 (9 worldwide citation)

A process whereby an optical fiber is hermetically coated with a layer of aluminum oxide. The fiber is reacted pyrolytically with organo aluminum derivatives or other aluminum compounds, either in the form of vapor or atomized spray, to produce the desired coating. The thickness can be varied by cha ...


6
David S Bither: Link controller. Aetna Telecommunications Laboratories, Weingarten Schurgin Gagnebin & Hayes, February 24, 1987: US04646292 (8 worldwide citation)

A system for controlling access and transmission timing of communication in a repeating sequence over a network between nodes of one or more terminals, such as in a local area network. Each node in the network is equipped to recognize the presence of boundaries in the transmissions of messages by al ...


7
Paul Barr: Real time network system. Aetna Telecommunications Laboratories, Weingarten Schurgin Gagnebin & Hayes, November 3, 1987: US04704721 (4 worldwide citation)

A phase locking system operative to phase lock a local clock to incoming data bits in a packet of short duration within a specified accuracy range, using no more than a few initial bits of the packet. Phase locking is achieved by phase shifting the data packet bits relative to a local clock signal a ...


8
James K Roberge: Real time network receiver system fast settling amplifier. Aetna Telecommunications Laboratories, Weingarten Schurgin Gagnebin & Hayes, July 14, 1987: US04680554 (1 worldwide citation)

A fast settling amplifier for use in a phase locking system operative to phase lock a local clock to incoming data bits in a packet of short duration within a specified accuracy range, using no more than a few initial bits of the packet. Phase locking is achieved by phase shifting the data packet bi ...


9
Nath Dilip K: Revetement doxyde daluminium pour fibres optiques, Aluminum oxide optical fiber coating. Aetna Telecommunications Laboratories A Partnership, MALCOLM JOHNSTON & ASSOCIATES, October 17, 1989: CA1262307 (1 worldwide citation)

ABSTRACT A process whereby an optical fiber is hermeticallycoated with a layer of aluminum oxide. The fiber is reactedpyrolytically with organo aluminum derivatives or otheraluminum compounds, either in the form of vapor or atomizedspray, to produce the desired coating. The thickness can bevaried by ...