Abstract: A semiconductor pressure sensor of the invention, includes: a base body (1) including: a lead frame (4) having a first surface and a second surface; and a support (5) that supports the lead frame (4) and is made of a resin; a pressure sensor chip (2) provided on the first surface of the lead frame (4); and a controller (3) that is provided on the second surface of the lead frame (4), is implanted in the support (5), is formed in the shape having a plurality of surfaces, includes a stress relief layer (32, 33, 34, 35, 36) that is formed on at least one of the plurality of surfaces and has a Young's modulus lower than that of the support (5), and receives a sensor signal output from the pressure sensor chip (2) aid thereby outputs a pressure detection, the pressure sensor chip (2) at least partially overlapping the controller (3) in plan view.

Abstract: A semiconductor pressure sensor of the invention, includes: a base body (1) including: a lead frame (4) having a first surface and a second surface; and a support (5) that supports the lead frame (4) and is made of a resin; a pressure sensor chip (2) provided on the first surface of the lead frame (4); and a controller (3) that is provided on the second surface of the lead frame (4), is implanted in the support (5), is formed in the shape having a plurality of surfaces, includes a stress relief layer (32, 33, 34, 35, 36) that is formed on at least one of the plurality of surfaces and has a Young's modulus lower than that of the support (5), and receives a sensor signal output from the pressure sensor chip (2) aid thereby outputs a pressure detection, the pressure sensor chip (2) at least partially overlapping the controller (3) in plan view.

Abstract: A production device and a production method for a grating-type optical component enabling formation of a variety types of FBGs using a single phase mask and an optical component made by the production method or production device for a grating-type optical component are provided. The method involves diffusing at least one of hydrogen or deuterium into an optical fiber and altering the refractive index of the optical fiber by irradiating the fiber with non-interfering UV lamp light.

Abstract: A configuration according to the invention includes at least one wired base material configured with an insulating base material having an adhesion property, and an electric conductive layer formed on one side of the insulating base material, a plugging electrode made of an electric conductive paste, connected to the electric conductive layer, and penetrating the insulating base material, and an IC chip having a re-wiring portion, the IC chip being buried in an interlayer binding material, with the re-wiring portion connected to the plugging electrode, having a supporting board disposed on an opposite side to the re-wiring portion of the IC chip, with an adhesion layer in between, and having a re-wiring layer configured with the wired base material and the re-wiring portion.

Abstract: A production device and a production method for a grating-type optical component enabling formation of a variety types of FBGs using a single phase mask and an optical component made by the production method or production device for a grating-type optical component are provided. The method involves diffusing at least one of hydrogen or deuterium into an optical fiber and altering the refractive index of the optical fiber by irradiating the fiber with non-interfering UV lamp light.

Abstract: A configuration according to the invention includes at least one wired base material configured with an insulating base material having an adhesion property, and an electric conductive layer formed on one side of the insulating base material, a plugging electrode made of an electric conductive paste, connected to the electric conductive layer, and penetrating the insulating base material, and an IC chip having a re-wiring portion, the IC chip being buried in an interlayer binding material, with the re-wiring portion connected to the plugging electrode, having a supporting board disposed on an opposite side to the re-wiring portion of the IC chip, with an adhesion layer in between, and having a re-wiring layer configured with the wired base material and the re-wiring portion.

Abstract: A production device and a production method for a grating-type optical component enabling formation of a variety types of FBGs using a single phase mask and an optical component made by the production method or production device for a grating-type optical component are provided. The method involves diffusing at least one of hydrogen or deuterium into an optical fiber and altering the refractive index of the optical fiber by irradiating the fiber with non-interfering UV lamp light.

Abstract: A production device and a production method for a grating-type optical component enabling formation of a variety types of FBGs using a single phase mask and an optical component made by the production method or production device for a grating-type optical component are provided. The method involves diffusing at least one of hydrogen or deuterium into an optical fiber and altering the refractive index of the optical fiber by irradiating the fiber with non-interfering UV lamp light.

Abstract: A production device and a production method for a grating-type optical component enabling formation of a variety types of FBGs using a single phase mask and an optical component made by the production method or production device for a grating-type optical component are provided. The method involves diffusing at least one of hydrogen or deuterium into an optical fiber and altering the refractive index of the optical fiber by irradiating the fiber with non-interfering UV lamp light.

Abstract: One embodiment of the present invention provides an optical detection sensor configured so as to irradiate exit light emitted from a light source onto an object to be measured, the object being disposed a relative distance away from an end face of a first optical fiber, and receive the reflection light therefrom with a second and a third optical fiber, thereby computing a displacement amount of the object.

Abstract: One embodiment of the present invention provides an optical detection sensor configured so as to irradiate exit light emitted from a light source onto an object to be measured, the object being disposed a relative distance away from an end face of a first optical fiber, and receive the reflection light therefrom with a second and a third optical fiber, thereby computing a displacement amount of the object.

Abstract: Photosensitivity of an inner core which is disposed in a central portion of a core is low. Photosensitivity of an outer core which is disposed close to a cladding is high. In the cladding, photosensitivity of the inner cladding which is close to the core is high and photosensitivity of an outer cladding which is outside of the inner cladding is low. A plurality of slant optical fiber grating having different optical characteristics by using the optical fiber having such photosensitivity so as to form a gain equalizing optical filter. By doing this, it is possible to provide an optical filter having a slant optical fiber grating which can maintain a filtering characteristics in a narrow bandwidth and enlarge loss area.

Abstract: A variable optical fiber grating is provided which is compact, and in which an amount of chromatic dispersion can be effectively varied without changing an operating center wavelength. Also provided is a dispersion compensator, which uses this variable optical fiber grating. The fixing member is formed by providing an outer cylinder 2 comprising a material with a lower coefficient of linear expansion around an inner cylinder 1 comprising a material with a higher coefficient of linear expansion, and an optical fiber grating is fixed in a groove 3 formed on the inner cylinder 1. By adjusting the fixing position of the optical fiber grating, an expansion coefficient and contraction coefficient of the optical fiber grating which follows the expansion and contraction of the material with the higher coefficient of linear expansion, differ along the longitudinal direction of the optical fiber grating, so that an amount of chromatic dispersion is controlled.

Abstract: The invention provides a method and apparatus that precisely and efficiently improves the optical properties of an optical fiber grating. Preferably hydrogen loading processing, grating formation processing that forms a grating part by irradiation with ultraviolet light at a predetermined period, and preferably dehydrogenation, adjusting the optical properties by a suitable combination of uniform ultraviolet irradiation processing that irradiates the grating part as a whole with ultraviolet light and heat trimming processing, and finally heat aging is carried out.

Abstract: A production device and a production method for a grating-type optical component enabling formation of a variety types of FBGs using a single phase mask and an optical component made by the production method or production device for a grating-type optical component are provided. The method involves diffusing at least one of hydrogen or deuterium into an optical fiber and altering the refractive index of the optical fiber by irradiating the fiber with non-interfering UV lamp light.

Abstract: There is provided a slant short-period grating which is obtainable by irradiating light onto an optical fiber whose core is formed from quartz glass to which has been doped a photosensitive dopant that changes a refractive index of the quartz glass by light irradiation, and whose clad has one or two or more layers with at least the layer that is adjacent to the core being a photosensitive layer formed from quartz glass to which has been doped a photosensitive dopant that changes a refractive index of the quartz glass by light irradiation. In this slant short-period grating a grating portion is formed by changing the refractive index of the photosensitive layer of the clad and the core at a predetermined grating period along a longitudinal direction of the optical fiber by a predetermined slant angle.

Abstract: The invention provides a method and apparatus that precisely and efficiently improves the optical properties of an optical fiber grating. Preferably hydrogen loading processing, grating formation processing that forms a grating part by irradiation with ultraviolet light at a predetermined period, and preferably dehydrogenation, adjusting the optical properties by a suitable combination of uniform ultraviolet irradiation processing that irradiates the grating part as a whole with ultraviolet light and heat trimming processing, and finally heat aging is carried out.

Abstract: A spool valve comprises a slidable spool, and through displacement of the spool a supply port of the valve is allowed to communicate with one of the load ports of the valve while the other load port is allowed to communicate with a corresponding one of return ports of the valve. The spool is provided with a portion, the outside diameter of which gradually increases, at least on the other load port side from the center of a central concave portion of the spool. The outside diameter gradually increasing portion decreases fluid force which acts against an operating force of the spool when the valve is activated.

Abstract: A variable optical fiber grating is provided which is compact, and in which an amount of chromatic dispersion can be effectively varied without changing an operating center wavelength. Also provided is a dispersion compensator, which uses this variable optical fiber grating. The fixing member is formed by providing an outer cylinder 2 comprising a material with a lower coefficient of linear expansion around an inner cylinder 1 comprising a material with a higher coefficient of linear expansion, and an optical fiber grating is fixed in a groove 3 formed on the inner cylinder 1. By adjusting the fixing position of the optical fiber grating, an expansion coefficient and contraction coefficient of the optical fiber grating which follows the expansion and contraction of the material with the higher coefficient of linear expansion, differ along the longitudinal direction of the optical fiber grating, so that an amount of chromatic dispersion is controlled.

Abstract: A spool valve comprises a valve body formed with a slide hole therein, a spool slidably received in the slide hole, a supply port, two load ports and two return ports, all of which ports are formed in the slide hole. The load and return ports are disposed with the supply port being the center. The spool has a central concave portion and two land portions, and with the displacement of the spool, the supply port is allowed to communicate with one of the load ports while the other land port is allowed to communicate with a corresponding one of the return ports. The spool is provided with a portion, the outside diameter of which gradually increases, at least on the other load port side from the center of the central concave portion. The outside diameter gradually increasing portion is formed in a conical shape, a curved drum shape, a stepped columnar shape or the like.