Patent application number | Description | Published |
20130308906 | SYSTEM AND METHOD FOR DENSE COUPLING BETWEEN OPTICAL DEVICES AND AN OPTICAL FIBER ARRAY - An optical system and method for coupling optical devices and an optical fiber array are provided. The optical system includes a substrate comprising a first side and a second side facing generally opposite to the first side. The optical system further includes at least one optical waveguide extending along at least a portion of the first side, at least one hole extending from the second side towards the first side, and at least one reflective element at the first side. The at least one reflective element is in optical communication with the at least one optical waveguide and with the at least one hole. The at least one reflective element is configured to deflect light between the at least one optical waveguide and the at least one hole. | 11-21-2013 |
20130315527 | PHOTOCARRIER-INJECTING VARIABLE OPTICAL ATTENUATOR - A photocarrier-injecting variable optical attenuator that operates by injecting photocarriers into a light transmitting waveguide from a second, injection light source. The light transmitting waveguide may be defined by a ridge extending from a slab of a light transmitting medium. The light transmitting waveguide is transparent to signal light. Light emitted from the second, injection light source is optically absorbed by the light transmitting waveguide to introduce photocarriers in a plurality of configurations, thereby attenuating the signal light. | 11-28-2013 |
20130330034 | OPTICAL SYSTEM WITH INTEGRATED PHOTODETECTOR USING A SELF-ALIGNED DOUBLE U-GROOVE STRUCTURE - An optical system includes a silicon substrate, a 45-degree or 54.7-degree reflector formed in the silicon substrate, deeply etched double U-shape trenches formed in the silicon substrate, a thin film disposed on the reflector surface with total or partial optical refection, a top and bottom surface contacted p-i-n structure formed in the silicon substrate for optical power monitoring, a plurality of rectangular or wedge shaped spacers formed on top surface of the silicon substrate, and a surface emitting light source flip-chip bonded on the silicon substrate via the spacers. | 12-12-2013 |
20140029890 | OPTICAL SYSTEM WITH INTEGRATED PHOTODETECTORS - An optical system and a method of fabrication are provided. The optical system includes a substrate and at least one hole extending from a second side of the substrate towards a first side of the substrate and configured to receive at least one optical fiber. The substrate includes at least one photodetector at the first side or between the at least one hole and the first side and configured to be in an optical path of an optical signal emitted from the at least one optical fiber or transmitted through the first side to the at least one optical fiber. The at least one photodetector is responsive to the optical signal by generating an electrical signal indicative of an intensity of the optical signal | 01-30-2014 |
20140079082 | TUNABLE OPTICAL SYSTEM WITH HYBRID INTEGRATED LASER - A tunable optical system with hybrid integrated semiconductor laser is provided. The optical system includes a silicon-on-insulator (SOI) substrate; a first optical waveguide tunable comb filter formed at the first side of the SOI substrate; a second optical waveguide tunable comb filter with detuned filter response formed at the first side of the SOI substrate; an etched laser pit at the first side of the SOI substrate; a plurality of spacers formed on the bottom surface of the laser pit near the plane of the first side of the SOI substrate; a plurality of bumping pads formed on the bottom surface of the laser pit near the plane of the first side of the SOI substrate; and a laser chip flip-chip bonded at the first side of the SOI substrate supported by the spacers. Heating sections may be provided on the filters to tune the filters. | 03-20-2014 |
20140124669 | WAVEGUIDE END-COUPLED INFRARED DETECTOR - A Ge waveguide photo-detector fabricated on a silicon-on-insulator substrate is provided. It comprises a Ge waveguide detector end-coupled to a light-signal-carrying silicon waveguide, both disposed on a silicon-on-insulator (SOI) substrate. An electrical field is established along the direction of light propagation inside the Ge waveguide detector by doping the two opposite ends of the Ge detector with P or N type dopants. In result the height and width of the Si waveguide is decoupled from the speed of the Ge detector. | 05-08-2014 |
20150132007 | Digital Optical Modulator for Programmable n-Quadrature Amplitude Modulation Generation - An optical transceiver comprising an optical signal input, a first modulation section coupled to the optical signal input, a second modulation segment coupled to the optical signal input and positioned in serial with the first modulation section, wherein the first modulation section comprises a first digital electrical signal input, a first digital driver coupled to the first digital electrical signal input, and a first modulator coupled to the first digital driver, and wherein the second modulation section comprises a second digital electrical signal input, a second digital driver coupled to the second digital electrical signal input, and a second modulator coupled to the second digital driver, and an optical signal output coupled to the first modulation section and the second modulation section. | 05-14-2015 |
20150212346 | Interdigitated Optical Modulator - An optical modulator comprises a silicon substrate, a buried oxide (BOX) layer disposed on top of the silicon substrate, and a ridge waveguide disposed on top of the BOX layer and comprising a first n-type silicon (n-Si) slab, a first gate oxide layer coupled to the first n-Si slab, a first p-type silicon (p-Si) slab coupled to the first gate oxide layer, and a light propagation path that travels sequentially through the first n-Si slab, the first gate oxide layer, and the first p-Si slab. | 07-30-2015 |