摘要:
Techniques related to optical devices are described herein. In an example, an optical device includes (a) an input optical channel and a corresponding output optical channel, and (b) an assembly of sub-wavelength grating layers aligned to optically couple the input optical channel to the output optical channel.
摘要:
Techniques related to optical connectors are described. A ferrule includes an optical pathway for light transmission through the ferrule. In examples, a sub-wavelength grating (SWG) assembly is integrated in the ferrule, aligned with an end of the optical pathway.
摘要:
Embodiments of the present invention are directed to optical waveguide-to-fiber interconnects. In one aspect, an optical fiber-to-waveguide interconnect includes a grating coupler (102) located at the end of a waveguide, and a grating layer (110) disposed on the end of an optical fiber (112). The optical fiber includes a core (118) and the grating layer includes a planar, non-periodic, sub-wavelength grating (116). Light carried by the waveguide into the grating coupler is output and coupled into the core via the sub-wavelength grating, and light transmitted along the core to the grating layer is directed by the sub-wavelength grating into the grating coupler for transmission in the waveguide.
摘要:
An energy collection system is provided. The system can include an energy collection device and an energy concentration device disposed proximate at least a portion of the energy collection device. The energy concentration device includes a non-periodic, sub-wavelength, dielectric grating.
摘要:
An apparatus for performing spectroscopy includes a substrate, a photodetector positioned at a distance with respect to the substrate, and a plurality of sub-wavelength grating (SWG) filters positioned between the substrate and the photodetector, in which the SWG filters are to filter different ranges of predetermined wavelengths of light emitted from an excitation location prior to being emitted onto the photodetector.
摘要:
An optical device (15; 25; 315; 325; 345; 400; 500; 600; 700; 800) may include a light transmissive medium (450; 550; 650; 750; 850) having two sides. On one side may be a high reflectivity mirror (430; 530; 630; 830) and on the other side may be a plurality of partial reflectivity mirrors (460-466; 560-566; 662-666; 860-870) that may be guided mode resonance or nanodot mirrors. An optical system (25; 315; 325; 345; 500; 600; 700; 800) may have a plurality of light inputs (FIG. 2A; FIG. 5A), a light transmissive medium (550; 650; 750; 850), and a plurality of light outputs (FIGS. 2A-2B; FIG. 5B) from the light transmissive medium (550; 650; 750; 850). The light transmissive medium (550; 650; 750; 850) may have a high reflectivity mirror (530; 630; 830) on one side and a plurality of partial reflectivity mirrors (560-566; 662-666; 860-870) on a second side.
摘要:
Embodiments of the present invention are directed to optical waveguide-to-fiber interconnects. In one aspect, an optical fiber-to-waveguide interconnect includes a grating coupler (102) located at the end of a waveguide, and a grating layer (110) disposed on the end of an optical fiber (112). The optical fiber includes a core (118) and the grating layer includes a planar, non-periodic, sub-wavelength grating (116). Light carried by the waveguide into the grating coupler is output and coupled into the core via the sub-wavelength grating, and light transmitted along the core to the grating layer is directed by the sub-wavelength grating into the grating coupler for transmission in the waveguide.
摘要:
This disclosure is directed to thermally controlled optical systems. In one aspect, an optical system includes a sub-wavelength grating having a planar geometry and a grating pattern associated with a particular shape of, and direction in which, a wavefront emerges from the grating, when the grating is illuminated by a beam of light. The system includes at least one heating element separately connected to a current source. The current source to inject a current into each heating element to heat a corresponding region of the grating and produce a desired change in the shape of, and/or direction in which, the wavefront emerges from the grating.
摘要:
An optical apparatus (100), an optical system (200) and a method (300) of light amplification by stimulated emission employ an endohedral metallofullerene (120, 220) as an active material coupled to an optical waveguide (110, 210). The endohedral metallofullerene (120, 220) is optically coupled to an optical field of the optical waveguide (110, 210). The coupled optical field produces a stimulated emission in the endohedral metallofullerene (120, 220). The optical system (200) further includes an optical source (230) that generates optical power (232) to pump a stimulated emission. The method (300) further includes optically pumping (330) the coupled endohedral metallofullerene by introducing an optical pump into the optical waveguide.
摘要:
A light emitting diode (100 or 150) includes a diode structure containing a quantum well (120), an enhancement layer (142), and a barrier layer (144 or 148) between the enhancement layer (142) and the quantum well (120). The enhancement layer (142) supports plasmon oscillations at a frequency that couples to photons produced by combination of electrons and holes in the quantum well (120). The barrier layer serves to block diffusion between the enhancement layer (142) and the diode structure.