摘要:
At least one of two slab waveguides constituting an arrayed waveguide grating is cut and separated together with a substrate on a cross separating face. A slide moving member is arranged over a waveguide forming area formed on the substrate including the separating slab waveguide and a waveguide forming area formed on the substrate including the separating slab waveguide. Temperature dependence of the center wavelength of the arrayed waveguide grating is reduced by slide-moving the separating slab waveguide by the slide moving member along the cross separating face dependently on temperature. The shift of an initial center wavelength is corrected by plastically deforming the slide moving member so that the initial center wavelength is conformed to a grid wavelength.
摘要:
An optical fiber module is formed by storing an optical component and a connection portion of this optical component and an optical fiber into a package. The optical fiber module has the package, the optical component unfixedly stored into the package, and the optical fiber in which one end side of the optical fiber is connected to the optical component and the other end side is pulled out of the package to the package exterior. An optical fiber anchor member is arranged in the package in an extraction preventing state in an optical fiber pulling-out area of the package. The optical fiber is fixed to the optical fiber anchor member. The optical fiber anchor member and the package are set to be relatively moved in the optical fiber longitudinal direction.
摘要:
An optical fiber module of the invention is a small-sized optical fiber module with small electric power consumption in which the characteristics are hardly deteriorated in association with environmental changes. The optical fiber module has a package, an optical component housed inside the package, and optical component holding parts disposed between the optical component and the package for holding the optical component. The configuration of holding the optical component by the optical component holding parts has a configuration of reducing heat conduction for reducing the heat conduction between the optical component and the package. The configuration of reducing heat conduction is such that the optical component holding parts hold the optical component in line contact.
摘要:
An arrayed waveguide grating optical multiplexer/demultiplexer is provided to suppress a temperature depending characteristic of a center wavelength. The arrayed waveguide grating comprises at least one optical input waveguide, a first slab waveguide, an arrayed waveguide, a second slab waveguide, and a plurality of optical output waveguides. The first slab waveguide is separated on an cross separating plane which is intersected to a path of light passing through the first slab waveguide to constitute separated slab waveguides. A slide moving member is provided which may move at least one of these separated slab waveguides along the cross separating plane, depending upon the temperature. A front surface side of the waveguide forming region and a rear surface side of the substrate are sandwiched by a positional shift suppressing member such as a clip. The possition depressing the waveguide forming region by the clip is escaped from the optical axis of the separated slab waveguides.
摘要:
An optical module comprising a planar lightwave circuit chip comprising a substrate and a waveguide forming region located on said substrate, a plurality of lids installed along a edge surface at least at one side of the edges of said planar lightwave circuit chip, and an optical fiber array connected to said planar lightwave circuit chip.
摘要:
A portable electronic device has a display part (16) which can display a plurality of selection items; an operation part (12) for selecting the selection item displayed on the display part (16); and a control part (18) which switches the selection item to other selection item selected from the selection items displayed on the display part (16) by operation of the operating part (12). The control part (18) has a function of changing the switching speed of the selection item selected by the operation of the operation part (12) in accordance with display mode of each of the selection items displayed on the display part (16). Thus, usability is improved by, for instance, changing a scroll speed for the continuous selection operation.
摘要:
A Gaussian filter 2 having a first cutoff frequency extracts a low frequency component signal of a video signal. A subtracter 3 extracts a high frequency component signal by subtracting the low frequency component signal from the video signal. A low pass filter 5 having a second cutoff frequency higher than the first cutoff frequency extracts a lower high frequency component signal, which is a low-frequency-side signal of the high frequency component signal. A multiplier 6 generates a corrected component signal by multiplying the lower high frequency component signal by a predetermined gain G1. An adder 7 adds the corrected component signal to the video signal.
摘要:
A gas/liquid separator is provided in which separation performance for fluid into gas and liquid is enhanced. A gas/liquid separator includes a body which separates a circulation gas into water and hydrogen gas in a separating space, a supply port from which the circulation gas flows into the inner space, the supply port being provided on the side wall surface forming the separating space, and a discharge port through which the separated hydrogen gas flows out of the separating space, the discharge port being provided on the side wall surface. In this case, the discharge port is provided above the supply port.
摘要:
In a system for controlling a headlight of a vehicle to be controlled, a distance detector detects a distance between the controlled vehicle and an other vehicle ahead thereof. A determiner determines a first target direction for an optical axis of the headlight in a vertical direction when it is assumed that the optical axis of the headlight passes through a target located at the detected distance with respect to the controlled vehicle. The target has a predetermined height above a predetermined reference point. The predetermined height of the target is unchanged irrespective of change in the detected distance. A first adjuster adjusts the direction of the optical axis of the headlight in the vertical direction so that the direction of the optical axis is matched with the determined first target direction.
摘要:
The object of the present invention is to prevent the adhesion of paint to the jig which supports an article to be coated, and to attain the object, the present invention provides a masking member made of a polymer alloy consisting of 20 to 80% by weight of polyphenylene ether and 80 to 20% by weight of polyamide, or a polymer alloy consisting of 100 parts by weight of a polymer mixture into which polyphenylene ether and polyamide are mixed in a weight ratio of between 20:80 and 80:20, and 0 to 50 parts by weight of a styrene group resin and 0 to 50 parts by weight of styrene group elastomer, the article 31 being supported by the jig, and spray coated.