Optical emitter-receiver module
AssigneeLatelec
InventorsAlexandre Bacou, Georges Zissis, Jérôme Pauc
Life of this patent
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Abstract
An optical emitter-receiver module includes a light source, a photodetector and a fiber. The light source emits an emitted beam. The fiber includes a core and an optical axis. The fiber has an outer surface, inclined at an angle of 45° with respect to the optical axis, having a mirror. The fiber has a notch, extending to the core of the fiber and having a face having a dichroic filter for reflecting a received beam. The light source is arranged relative to the mirror so that the emitted beam is reflected by the mirror and transmitted in the fiber. The photodetector and the face of the notch are positioned so that the received beam reflected by the dichroic filter is directed towards the photodetector.
Claims7
An optical emitter-receiver module comprising:
- a first light source;
- a first photodetector;
- a multimode glass optical fiber, the first light source being configured to emit a first emitted beam at a first wavelength, the multimode glass optical fiber comprising:
- a core;
- an optical cladding;
- an optical axis;
- a first end surface, inclined at an angle of 45° with respect to the optical axis of the multimode glass optical fiber, comprising a mirror;
- and a first notch, extending from an outer surface of the optical cladding to the core of the multimode glass optical fiber, comprising a first face comprising a first dichroic filter configured to reflect a first received beam of wavelength equal to a second wavelength, the second wavelength being different from the first wavelength;
- the first light source being arranged relative to the mirror such that the first emitted beam, emitted by the first light source passes through the optical cladding, is reflected by the mirror and is transmitted in the multimode glass optical fiber;
- the first photodetector and the first face of the first notch being positioned relative to one another such that the first received beam reflected by the first dichroic filter passes through the optical cladding and is directed towards the first photodetector;
- and
- wherein the multimode glass optical fiber further comprises a second notch, extending from an outer surface of the optical cladding to the core of the multimode glass optical fiber, comprising a first face comprising a second dichroic filter configured to reflect a light beam at a third wavelength, the third wavelength being different from the first wavelength and from the second wavelength.
Dependencies are inferred from the claim text.