Abstract: Optical scanner and electrophotographic image forming apparatus are provided. The optical scanner includes a light source, configured to emit a light beam; an optical deflector, configured to deflect the light beam emitted from the light source; a first optical unit, arranged there-between and including a refraction unit and a diffraction unit; and a second optical unit, arranged in a light exit direction of the optical deflector and configured to make the light beam deflected by the optical deflector form an image on a scanning target surface. A range of a ratio of a refractive power ?r to a diffractive power ?d of the first optical unit in a main scanning direction is 0.3<?r/?d<0.5; and a range of a ratio of a refractive power ?s to a diffractive power ?n of the first optical unit in a sub scanning direction is 0.7<?s/?n<1.0.

Abstract: Optical scanner and electrophotographic image forming device are provided. The optical scanner includes a light source; and a first optical unit, a deflection apparatus, and an f-? lens, which are sequentially arranged along a primary optical axis direction of a light beam emitted from the light source. The light beam emitted from the light source is focused onto a scanning target surface after sequentially passing through the first optical unit, the deflection apparatus, and the f-? lens. Optical scanning directions of the light beam emitted from the light source include a primary scanning direction and a secondary scanning direction which are perpendicular to each other, and along the primary scanning direction, the f-? lens satisfies following expressions: SAG1>0, SAG2>0, and 0<(SAG1+SAG2)/d<0.8.

Abstract: Optical scanner and electrophotographic image forming apparatus are provided. The optical scanner includes a light source, configured to emit a light beam; an optical deflector, configured to deflect the light beam emitted from the light source; a first optical unit, arranged there-between and including a refraction unit and a diffraction unit; and a second optical unit, arranged in a light exit direction of the optical deflector and configured to make the light beam deflected by the optical deflector form an image on a scanning target surface. A range of a ratio of a refractive power ?r to a diffractive power ?d of the first optical unit in a main scanning direction is 0.3<?r/?d<0.5; and a range of a ratio of a refractive power ?s to a diffractive power ?n of the first optical unit in a sub scanning direction is 0.7<?s/?n<1.0.

Abstract: Optical scanner and electrophotographic image forming device are provided. The optical scanner includes a light source; and a first optical unit, a deflection apparatus, and an f-? lens, which are sequentially arranged along a primary optical axis direction of a light beam emitted from the light source. The light beam emitted from the light source is focused onto a scanning target surface after sequentially passing through the first optical unit, the deflection apparatus, and the f-? lens. Optical scanning directions of the light beam emitted from the light source include a primary scanning direction and a secondary scanning direction which are perpendicular to each other, and along the primary scanning direction, the f-? lens satisfies following expressions: SAG1>0, SAG2>0, and 0<(SAG1+SAG2)/d<0.8.

Abstract: A method of fabricating Fiber Bragg gratings in a micro/nanofiber using ultrashort pulse irradiation, the method includes elongating and flame-brushing a single mode optical fiber to create a micro/nanofiber, and generating the ultrashort pulse irradiation to induce a plurality of refractive index changes at predetermined intervals within the micro/nanofiber, wherein the ultrashort pulse propagates through a focusing element and a diffractive element prior to propagating on the micro/nanofiber.

Abstract: Photonic devices that include in-line optical microfibers for different uses such as sensing are described. At least one enclosed cavity is positioned within the optical microfiber. One or more enclosed cavities are positioned along or adjacent to a central axis of the microfiber. Light travelling within the microfiber passes through both the enclosed cavity and a remaining portion of the microfiber not occupied by the enclosed cavity. For interferometer applications, recombination of the light propagating through the microfiber and cavity has a light intensity correlated to an external physical property to be measured such as temperature and refractive index as well as strain and bending experienced by the fiber. Plural cavities can be constructed sequentially. Further, whispering gallery mode (WGM) resonator properties of the enclosed cavity can be used to measure external properties. A method for fabricating the optical microfiber devices by micromachining is also described.

Abstract: A fiber-inline MZI device for temperature sensing or refractive index (RI) sensing, the device comprising: a section of a Photonic Crystal Fiber (PCF) having at least two air holes infiltrated with a liquid analyte to form a waveguide channel, the liquid analyte forming rods in the PCF; wherein the rods leave an interference fringe pattern in the transmission spectrum when light is injected into the PCF, and fringe dips are tracked over a wide wavelength range in order to sense the temperature or refractive index.

Abstract: A refrigeration apparatus is provided having improved access to ice. The refrigeration apparatus includes a freezer compartment, a slidable support, an ice maker and an ice bin. The slidable support occupies a portion of the freezer compartment and is configured to open to an extended position. The ice bin is moveable with the slidable support and occupies at least a portion of the slidable support. The stationary ice maker is attached to the freezer compartment and located above the portion of the slidable support. When the slidable support is pulled opened to the extended position, access to the ice bin is unobstructed by the ice maker.

Abstract: A single fiber Mach-Zehnder interferometer comprises an optical fiber having a core region and a cladding surrounding the core region, and a micro-cavity having part of the cladding and the core region removed, wherein the micro-cavity is adapted to receive a light beam and separate the light beam into a first light beam that propagates through the micro-cavity in an unguided mode, and a second light beam that propagates through the core region in a guided mode.

Abstract: The present invention provides a refrigeration apparatus having improved access to ice comprising a freezer compartment, a freezer drawer occupying a portion of the freezer compartment and configured to open to an extended position, an ice bin moveable with the freezer drawer and occupying at least a portion of the freezer drawer, and a stationary ice maker attached to the freezer compartment and located above the portion of the freezer drawer, wherein when the freezer drawer is pulled opened to the extended position, access to the ice bin is unobstructed by the ice maker.

Abstract: A fiber-inline MZI device for temperature sensing or refractive index (RI) sensing, the device comprising: a section of a Photonic Crystal Fiber (PCF) having at least two air holes infiltrated with a liquid analyte to form a waveguide channel, the liquid analyte forming rods in the PCF; wherein the rods leave an interference fringe pattern in the transmission spectrum when light is injected into the PCF, and fringe dips are tracked over a wide wavelength range in order to sense the temperature or refractive index.

Abstract: The present invention provides a refrigeration apparatus having improved access to ice comprising a freezer compartment, a slidable support occupying a portion of the freezer compartment and configured to open to an extended position, an ice bin moveable with the slidable support and occupying at least a portion of the slidable support, and a stationary ice maker attached to the freezer compartment and located above the portion of the slidable support, wherein when the slidable support is pulled opened to the extended position, access to the ice bin is unobstructed by the ice maker.

Abstract: An optical fiber with long period fiber gratings includes an optical fiber axis, a core region extending along the fiber axis, the core region having a core refractive index, a cladding region surrounding the core region, the cladding having a cladding refractive index, and a plurality of microholes perpendicular to the fiber axis with a portion of the core region removed, the plurality of microholes are spaced apart by a grating period.

Abstract: A refrigerator with an ice maker (211) comprises a freezing chamber (3), a refrigerating chamber (2), door bodies (21, 31) selectively opening and closing the refrigerating chamber (2) and the freezing chamber (3), and an ice maker (211) provided in the freezing chamber (3), the refrigerating chamber (2) or the door body (21, 31) for making ice. The ice maker (211) is connected with a refrigerating system independent from the freezing chamber (3) and the refrigerating chamber (2) so that the ice maker (211) is not affected by the refrigerating conditions of other chambers and can make ice independently.

Abstract: A refrigerator comprises a shell body (1) divided into a refrigerating chamber (2) and a freezing chamber (3), and a door body (20) selectively opening and closing the refrigerating chamber (2) and the freezing chamber (3), and further comprises an ice-making chamber (21) and movable supporting mechanisms (213, 214) connecting the ice-making chamber (21) and the inner wall of the shell body (1).

Abstract: A method of fabricating Fiber Bragg gratings in a micro/nanofiber using ultrashort pulse irradiation, the method includes elongating and flame-brushing a single mode optical fiber to create a micro/nanofiber, and generating the ultrashort pulse irradiation to induce a plurality of refractive index changes at predetermined intervals within the micro/nanofiber, wherein the ultrashort pulse propagates through a focusing element and a diffractive element prior to propagating on the micro/nanofiber.

Abstract: An optical fiber with long period fiber gratings includes an optical fiber axis, a core region extending along the fiber axis, the core region having a core refractive index, a cladding region surrounding the core region, the cladding having a cladding refractive index, and a plurality of microholes perpendicular to the fiber axis with a portion of the core region removed, the plurality of microholes are spaced apart by a grating period.

Abstract: A single fiber Mach-Zehnder interferometer comprises an optical fiber having a core region and a cladding surrounding the core region, and a micro-cavity having part of the cladding and the core region removed, wherein the micro-cavity is adapted to receive a light beam and separate the light beam into a first light beam that propagates through the micro-cavity in an unguided mode, and a second light beam that propagates through the core region in a guided mode.