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Ivo Flammer, Louis Anne De Montmorillon, Pieter Matthijsse: Optical fiber. Draka Comteq, Summa Additon & Ashe P A, June 30, 2009: US07555186 (238 worldwide citation)

An improved optical fiber achieves both reduced bending and microbending losses, as well as a much higher Brillouin threshold, as compared to standard transmission fibers. The optical fiber comprises a core including at least two dopants and having a refractive index difference Δn1 with an outer opt ...


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Louis Anne De Montmorillon, Pieter Matthijsse, Pascale Nouchi, Denis Molin, Marianne Bigot Astruc, Pierre Sillard, Frans Gooijer, Ivo Flammer, Yves Lumineau: Single mode optical fiber. Draka Comteq, Summa Additon & Ashe P A, November 24, 2009: US07623747 (126 worldwide citation)

An optical transmission fiber includes a central core having an index difference Δn1 with an outer optical cladding; a first inner cladding having an index difference Δn2 with the outer cladding; and a second buried inner cladding having an index difference Δn3 with the outer cladding of less than − ...


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Pieter Matthijsse, Frans Gooijer, Ivo Flammer, Elise Regnier, Gerard Kuyt: Fluorine-doped optical fiber. Draka Comteq, Summa Additon & Ashe P A, April 28, 2009: US07526177 (43 worldwide citation)

A single mode optical transmission fiber comprises a depressed core having at least 0.41 weight percent fluorine and an index difference (|Δn1|) with pure silica greater than 1.5×10−3, a depressed cladding having at least 1.2 weight percent fluorine and an index difference (|Δn2|) with pure silica g ...


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Pieter Matthijsse, Marinus Jacob De Fouw: Optical communication system as well as a access network provided therewith. Draka Comteq, Sughrue Mion PLLC, November 2, 2010: US07826691 (24 worldwide citation)

The invention relates to an access network for exchanging communication signals between a transit network and at least one communication medium of a user. The communication medium is operatively connected to an exchange by means of an optical fiber connection for exchanging the communication signals ...


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Pieter Matthijsse: Device for coupling at least three light guides. De Staat der Nederlanden Te Dezen Vertegenwoordigd Door de Directeur Generaal der Posterijen Telegraphie en Telefonie, Hugh Adam Kirk, March 24, 1981: US04257673 (21 worldwide citation)

The invention provides a coupling device for monochromatic optical signals based on the amplitude division method. The optical signal emerging from one light guide is divided by means of one or more diffraction gratings among three or more outgoing light guides. Inversely, the optical signals from a ...


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Louis Anne de Montmorillon, Denis Molin, Pieter Matthijsse, Frans Gooijer, Emmanuel Petitfrere, Yves Lumineau, Franciscus Johannes Achten, Marianne Bigot Astruc, Pierre Sillard, Pascale Nouchi: Single-mode optical fiber. Draka Comteq, Summa Additon & Ashe P A, March 1, 2011: US07899293 (15 worldwide citation)

Disclosed is an optical transmission fiber having reduced bending and microbending losses that is commercially usable in FTTH or FTTC transmission systems.


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Louis Anne de Montmorillon, Denis Molin, Pieter Matthijsse, Frans Gooijer, Ivo Flammer, Yves Lumineau, Marianne Bigot Astruc, Pierre Sillard, Pascale Nouchi: Single mode optical fiber. Draka Comteq, Summa Additon & Ashe P A, August 9, 2011: US07995889 (11 worldwide citation)

An optical transmission fiber comprises a central core having an index difference Δn1 with an outer optical cladding; a first inner cladding having an index difference Δn2 with the outer cladding; and a second buried inner cladding having an index difference Δn3 with the outer cladding of less than ...


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Cornelis M De Blok, Pieter Matthijsse: Method and device for coupling an optical signal from a first light guide into a second light guide. Staat der Nederlanden, Frishauf Holtz Goodman & Woodward, February 24, 1987: US04645923 (9 worldwide citation)

An apparatus for aligning monomode optical fibers utilizes a first optical coupler for injecting light into a straight section of a first fiber through its buffer, a first pin for bending the first fiber downstream of the first optical coupler to convert cladding modes into core modes, a second pin ...


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Ivo Flammer, Louis Anne De Montmorillon, Pieter Matthijsse: Optical fiber. Draka Comteq, Summa Additon & Ashe P A, February 22, 2011: US07894698 (5 worldwide citation)

An improved optical fiber achieves both reduced bending and microbending losses, as well as a much higher Brillouin threshold, as compared to standard transmission fibers. The optical fiber comprises a core including at least two dopants and having a refractive index difference Δn1 with an outer opt ...