Ecole Polytechnique

Polyvalor, Limited Partnership

Itf Optical Technologies Inc.

Itf Laboratories Inc.

Xavier Daxhelet

François Gonthier

François Seguin

Suzanne LaCroix

Nicolas Godbout

Jacques Bures

Denis-Alexandre Brulotte

Pierre Martineau

Simon Lemire-Renaud

Caroline Boudoux

Mikael Leduc

Patrick Cigana

Pascal Octeau

Sébastien Allard

Francois Seguin

Wendy-Julie Madore

Richard J Black

Sebastien Allard

Mikaël Leduc

There is described an optical fiber coupler in which at least one fiber is a multiple-clad fiber, containing a single-mode core supporting a single guiding mode and an inner multi-mode cladding guiding multiple modes. The multiple-clad fiber is fused with a second fiber of a different etendue to create an optical fiber coupler having an enhanced multi-mode signal transmission.

Asymmetric optical fiber coupler

A packaging device for protectively enclosing an optical component in a substantially clean and anhydrous environment without imparting undue mechanical stresses on the optical component and adjacent segments of optical fiber coupled thereto. An intermediate component is used in combination with a sealing material for sealing the fiber aperture of a protective housing while allowing an optical fiber to extend therethrough. The protective housing is made out of a material having a coefficient of thermal expansion that closely matches that of the optical fiber. A chain of material CTE that includes the CTE of the intermediate component is used in order to circumvent the need for a sealing material having a high melting temperature. The packaging device is also designed so as to reduce water ingress by optimizing the configuration of the sealing component and adjacent structures.

Optical component packaging device

A wavelength filter is integrated to a single-mode optical fiber capable of propagating a light signal and comprising a longitudinal and opaque outer jacket enveloping the fiber. This fiber is stripped of its jacket on a given length thereof to obtain a non-jacketed length of optical fiber. The so produced non-jacketed fiber length is formed with first and second concatenated biconical tapers separated from each other by a given distance and each having a given profile. By appropriately selecting the distance separating the two tapers and the given profile thereof, the filter will enable transmission of a first, predetermined wavelength of the propagated light signal while it will stop a second, predetermined wavelength of the signal. A method of integrating such a filter to a single-mode optical fiber is also proposed.

Compact wavelength filter integrated to a single-mode optical fiber

Growing community of inventors

Montreal, Canada

Xavier Daxhelet