Abstract: A method for imaging a tissue includes collecting a light signal from at least part of said tissue, using a fiber optic probe for fluorescence imaging, wherein the fiber optic probe comprises a plurality of optic fibers, and wherein a distal tip of the fiber optic probe is placed at a distance from said tissue, said imaging being made confocal at a proximal tip of said fiber optic probe. A fluorescence imaging system includes an endoscope equipped with a working channel, in which a fiber optic probe has been inserted, wherein the fiber optic probe is movable between a retracted position and at least one position of extension, said fiber optic probe comprising a plurality of optic fibers for performing imaging of a tissue, said imaging being confocal via a processor located at a proximal tip of said fiber optic probe.

Abstract: A method for imaging a tissue includes collecting a light signal from at least part of said tissue, using a fiber optic probe for fluorescence imaging, wherein the fiber optic probe comprises a plurality of optic fibers, and wherein a distal tip of the fiber optic probe is placed at a distance from said tissue, said imaging being made confocal at a proximal tip of said fiber optic probe. A fluorescence imaging system includes an endoscope equipped with a working channel, in which a fiber optic probe has been inserted, wherein the fiber optic probe is movable between a retracted position and at least one position of extension, said fiber optic probe comprising a plurality of optic fibers for performing imaging of a tissue, said imaging being confocal via a processor located at a proximal tip of said fiber optic probe.

Abstract: The invention relates to a multichannel optical attenuator for multiplexed signal. This optical attenuator includes at least one input optical fibre (1) intended to transport a set of light beams (2) centred on different wavelengths (?1, . . . , ?n) and at least one output optical fibre (3) intended to transport said set of light beams. The beams (2) are sent to a polarisation splitting assembly (4). This splitting assembly (4) includes first polarisation splitting means (5) generating two light beams (8-9) linearly polarised along orthogonal directions and a first lens (6). Controllable means (10) liable to change the polarisation of said beams (8-9) are inserted between the first lens (6) and a second lens (11). A recombination assembly (13) comprising the second lens (11) and second polarisation splitting means (14) receives the light beams linearly (8-9) polarised from said controllable means (10) to send them to the output optical fibres (3).

Abstract: The invention concerns an optical interferometer (1) with two waves defining two paths of different optical lengths and comprising at least a separator periscope (2, 3, 4) forming a Mach-Zender interferometer. The invention is characterised in that the interferometer (1) comprises, on the short path of the interferometer (1), a compensating plate (6) cut in glass of the same type as the separator periscopes (2, 3, 4) and having as thickness the difference of the glass thickness of the separator periscopes (2, 3, 4) traversed respectively by each of the waves. The invention is applicable to wavelength-multiplexed optical fibre transmission devices.