Abstract: An optoelectronic transmitting and receiving device, including a pierced platform including at least one through hole for introduction of an optical fiber, a first optoelectronic element integral with the platform, arranged substantially facing the through hole and configured to emit or receive a first laser beam at a first wavelength, and at least one second optoelectronic element hybridized on the platform and arranged substantially facing the through hole. The first element is arranged between the platform and the second element, which is configured to receive or emit a second laser beam at a second wavelength, different than the first wavelength, passing through the first element.

Abstract: A method and a device, using a system of plural cavity resonators, enabling to measure the light absorption or diffusion of biological samples. A measurement of low absorption or diffusion can be achieved and for example be applied for measuring the hybridization of DNA strands.

Abstract: Resonant cavity diode, operating at the same wavelength for emission and detection of light. This diode is particularly applicable to telecommunications and comprises a resonant cavity (12) delimited by two mirrors (8, 16) and containing an active medium (14) and at least two insulating and coaxial rings (24, 30, 32) with the same inside diameter and the same outside diameter, the total thickness of the rings being provided such that the optical length of the resonant cavity is k×? (k?2), in the part of this cavity that passes through the rings, and is (k?1)×? in the part containing these rings, where ? is the wavelength at which the diode is capable of emitting and detecting.

Abstract: The present invention proposes a method as well as a device enabling in particular the absorption or the light diffusion of biological samples to be measured. It enables the measurement of low absorption or diffusion and can for example be applied for measuring the hybridization of DNA strands.

Abstract: Resonant cavity diode, operating at the same wavelength for emission and detection of light. This diode is particularly applicable to telecommunications and comprises a resonant cavity (12) delimited by two mirrors (8, 16) and containing an active medium (14) and at least two insulating and coaxial rings (24, 30, 32) with the same inside diameter and the same outside diameter, the total thickness of the rings being provided such that the optical length of the resonant cavity is k×? (k?2), in the part of this cavity that passes through the rings, and is (k?1)×? in the part containing these rings, where ? is the wavelength at which the diode is capable of emitting and detecting.