Abstract:
An integrated quantum random noise source includes a substrate, an optical oscillator that may be integral to the substrate coupled by an optical waveguide to an optical directional coupler. The optical directional coupler has two outputs that are coupled by optical waveguides to a pair of photodetectors that are part of a balanced photodetector. The balanced photodetector in response outputs an analogue signal proportional to the difference in photocurrents of the two photodetectors. The analogue output signal from the balanced photodetector is a random Gaussian-distributed signal representative of quadrature measurements on the quantum vacuum state of light. The random noise source can be coupled other apparatus to provide a source of random bits.
Abstract:
The present disclosure relates to a reflective optical sensor module, an optical sensing accessory, and an optical sensing device. A reflective optical sensor module comprises a light source (110) and a first encapsulant (111), a photodetector (120) and a second encapsulant (121), an electrode (170) and a substrate (140). The light source (110) is configured to convert electric power into radiant energy and to emit light to an object surface. The photodetector (120) is configured to receive the light from an object surface and to convert radiant energy into electrical current or voltage. The electrode (170) is configured to detect an external circuit formed by the contact with an object surface. The optical sensing accessory and the optical sensing device comprise the reflective optical sensor module and other electronic modules to have further applications.
Abstract:
Systems for enhancing the sensitivity of detecting an optical signal using nonlinear optics and method of performing the same. In one embodiment, a single-photon detection system includes an optical amplifier realized in a waveguide, and a photodetector coupled to an output of the optical amplifier. A light detection and ranging system includes the optical amplifier coupled to an optical source and one photodetector. In another embodiment, a photo detection system includes a plurality of optical frequency converters, coupled to an optical source, that sequentially convert a wavelength of photons of the optical source to a final wavelength, and a single-photon photodetector coupled to the optical frequency converters to detect single photons produced by the optical source. In another embodiment, an optical sensor includes an optical pump, and a transducer including an optical ring cavity coupled to the optical pump and configured to utilize optical four-wave mixing to detect an external stimulus.
Abstract:
L'invention concerne un dispositif de détection optronique comprenant outre un objectif (A) captant une onde à détecter et des moyens de conversion opto-électronique (E), un guide d'onde à fibres optiques (fo ij ) siège d'effets optiques non-linéaires. Dans une variante de réalisation préférée, chaque fibre optique est dopée par un ou plusieurs ions de terre rare, tel l'Erbium :Er³⁺, excités par pompage optique (D). Application à la télémétrie, à l'écartométrie et plus généralement à la veille optique durcie contre les agressions optiques (contre-mesure).
Abstract:
기판의 온도를 측정하는 장치 및 방법이 개시된다. 장치는 온도 표시 방사의 소스, 온도 표시 방사를 위한 검출기, 및 온도 표시 방사의 소스와 온도 표시 방사를 위한 검출기 사이의 광학적 경로 내에 배치된 역상관기를 포함한다. 역상관기는 광대역 증폭기 및/또는 모드 스크램블러일 수 있다. 광대역 증폭기는 광대역 레이저, 브래그 격자, 파이버 브래그 격자, 라만 증폭기, 브릴루앙 증폭기 또는 그들의 조합일 수 있다. 역상관기는 모니터링 중인 기판에 의해 적어도 부분적으로 투과되는 방사를 방출하도록 선택된다. 역상관기가 이득 구동 장치인 경우, 소스의 방출 스펙트럼이 역상관기의 이득 대역폭 내에 있도록, 소스가 역상관기에 매칭된다.