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 photodetector receiver circuit, including: a photodetector for receiving an optical signal and converting the optical signal into a current; and a dynamic impedance circuit connected to the photodetector; wherein the dynamic impedance circuit is configured to have a first impedance during a charging phase and a second impedance during a discharging phase, the first impedance comprising a slower decay time than the second impedance.
摘要:
A photodetector receiver circuit, including: a photodetector for receiving an optical signal and converting the optical signal into a current; and a dynamic impedance circuit connected to the photodetector; wherein the dynamic impedance circuit is configured to have a first impedance during a charging phase and a second impedance during a discharging phase, the first impedance comprising a slower decay time than the second impedance.
摘要:
A microring resonator and methods critically couple a microring waveguide to an adjacent bus waveguide. A method of determining parameters of a critically coupled microring resonator includes modeling a coupled portion of the microring resonator as a U-shaped waveguide spaced apart from a straight waveguide by a gap and selecting a straight waveguide width and a gap size to optimize an output coupling ratio between the U-shaped waveguide and the straight waveguide. A method of producing the microring resonator includes using the determined parameters to produce, and a critically coupled microring resonator includes, a ring-shaped or microring waveguide spaced from the bus waveguide by a gap.
摘要:
A microring resonator and methods critically couple a microring waveguide to an adjacent bus waveguide. A method of determining parameters of a critically coupled microring resonator includes modeling a coupled portion of the microring resonator as a U-shaped waveguide spaced apart from a straight waveguide by a gap and selecting a straight waveguide width and a gap size to optimize an output coupling ratio between the U-shaped waveguide and the straight waveguide. A method of producing the microring resonator includes using the determined parameters to produce, and a critically coupled microring resonator includes, a ring-shaped or microring waveguide spaced from the bus waveguide by a gap.
摘要:
Compact photonics platforms and methods of forming the same are provided. An example of a compact photonics platform includes a layered structure having an active region along a longitudinal axis, a facet having an angle no less than a critical angle formed at least one longitudinal end of the active region, and a waveguide having at least one grating coupler positioned in alignment with the angled facet to couple light out to or in from the waveguide.
摘要:
Planar, polarization insensitive, optical elements to control refraction of transmitted light in free space are disclosed. In one aspect, an optical element includes a substrate having a planar surface, and a polarization insensitive, high contrast, sub-wavelength grating composed of posts that extend from the planar surface. The grating has at least one region. Within each region, cross-sectional dimensions of the posts and/or lattice arrangement of the posts are nonperiodically varied to control refraction of light transmitted through the optical element.
摘要:
An integrated sub-wavelength grating element includes a transparent layer formed over an optoelectronic substrate layer and a sub-wavelength grating element formed into a grating layer disposed on said transparent layer. The sub-wavelength grating element is formed in alignment with an active region of an optoelectronic component within the optoelectronic substrate layer. The sub-wavelength grating element affects light passing between said grating element and said active region. A method for forming an integrated sub-wavelength grating element is also provided.
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.