摘要:
An optical filter is manufactured by placing a photosensitive optical fiber in a spiral arrangement on a fiber holder, preferably having a spiral groove for holding the fiber, and exposing the fiber to ultraviolet light through a phase mask having a spiral diffraction grating, forming an in-fiber Bragg grating. The fiber can be conveniently scanned by an ultraviolet beam as the fiber holder and phase mask turn on a rotating stage. The fiber can be compactly packaged between the fiber holder and a cover. The fiber holder and cover can be formed by coating a substrate with layers of polymer material, the spiral groove being formed by photolithographic patterning of one of the layers.
摘要:
An optical filter is manufactured by placing a photosensitive optical fiber in a spiral arrangement on a fiber holder, preferably having a spiral groove for holding the fiber, and exposing the fiber to ultraviolet light through a phase mask having a spiral diffraction grating, forming an in-fiber Bragg grating. The fiber can be conveniently scanned by an ultraviolet beam as the fiber holder and phase mask turn on a rotating stage. The fiber can be compactly packaged between the fiber holder and a cover. The fiber holder and cover can be formed by coating a substrate with layers of polymer material, the spiral groove being formed by photolithographic patterning of one of the layers.
摘要:
An active-matrix-addressed liquid crystal display includes an active-matrix substrate and an opposing electrode substrate on which opposing electrodes are formed. The opposing electrodes are formed into a combination of stripe electrodes each for collecting an electric field originating from the associated data line conductor, and display electrodes each corresponding to the associated pixel electrode. The stripe electrodes are connected with the associated display electrodes outside display areas. There are provided on the opposing electrode substrate a black mask formed of a photosensitive resin in which pigment of black is dispersed. The opposing electrodes may also be formed in an assembly of stripe electrodes each correspondingly to the associated pixel electrodes, no opposing electrode being disposed above the data line conductor.
摘要:
A TFT matrix for an active matrix display panel has a plurality of TFTs arranged in rows and columns to form a matrix array. Each of the TFT has a control electrode on a dielectric substrate, a first insulator film formed on the control electrode, a second insulator film formed on the first insulator film, a-Si semiconductor layer formed on the second insulator film, and first and second (drain and source) electrodes formed on the a-Si semiconductor layer. The matrix has a plurality of transparent electrodes that contact the second electrodes, row interconnection layers interconnecting the control electrodes of the TFTs of the respective rows, and column interconnection layers interconnecting the first electrodes of the TFTs of the respective columns. The control electrodes and the row interconnection layers (gate electrodes) are made of an alloy of tantalum with tungsten, nickel, cobalt, rhodium, or iridium. The first insulator is formed by anodizing the surface of the gate electrode. The gate electrode has low resistance, improving the quality of the display without impairing insulation performance.
摘要:
A TFT matrix for an active matrix display panel has a plurality of TFTs arranged in rows and columns to form a matrix array. Each of the TFT has a control electrode on a dielectric substrate, a first insulator film formed on the control electrode, a second insulator film formed on the first insulator film, a-Si semiconductor layer formed on the second insulator film, and first and second (drain and source) electrodes formed on the a-Si semiconductor layer. The matrix has a plurality of transparent electrodes that contact the second electrodes, row interconnection layers interconnecting the control electrodes of the TFTs of the respective rows, and column interconnection layers interconnecting the first electrodes of the TFTs of the respective columns. The control electrodes and the row interconnection layers (gate electrodes) are made of an alloy of tantalum with tungsten, nickel, cobalt, rhodium, or iridium. The first insulator is formed by anodizing the surface of the gate electrode. The gate electrode has low resistance, improving the quality of the display without impairing insulation performance.
摘要:
An optical filter comprising a first CBG including a first end and a second end, a second CBG of the same structure as the first CBG, including a third end of the same structure as the first end and a fourth end of the same structure as the second end, and a circuit including an input port and an output port. The circuit receives a first optical signal via the input port and brings it to the first end of the first CBG, the circuit receives a second optical signal produced by reflecting the first optical signal from the first CBG and brings the second optical signal to the fourth end of the second CBG, and the circuit receives a third optical signal produced by reflecting the second optical signal from the second CBG and outputs the third optical signal via the output port.
摘要:
A recorded sheet handling apparatus includes an intermediate holding section as a stacker for holding a set of recorded sheets externally fed one by one and stacked in a feeding order, a handling unit for selectively punching and/or stapling the set of recorded sheets held in the intermediate holding section at a holding position, a storage tray for storing the handled recorded sheets, first convey rollers for conveying the recorded sheets prior to handling to the intermediate holding section, and second convey rollers for conveying the handled recorded sheets to the storage tray.
摘要:
An optical signal encoder/decoder includes a grating waveguide having an identical number of uniform pitch gratings to the number of code chips of a binary phase optical code, the uniform pitch gratings being formed in a waveguide direction to reflect light of a predetermined wavelength. Here, adjacent gratings corresponding to a position at which the optical code value changes are disposed a spacing apart from each other to give a phase shift of (2m+1)π/2 to the light, and the remaining adjacent gratings are disposed a spacing apart from each other to give a phase shift of nπ to the light (m, n: integer).
摘要:
There is provided a fiber Bragg grating devise comprising an FBG mount that is constituted by sequentially stacking a temperature control plate, a base plate, and a mounting plate, and an SSFBG in which a plurality of FBG units of the same constitution and a plurality of phase modulation portions are alternately formed in the same optical fiber. The temperature control plate is constituted by a thermo module and a heat-insulating member. The base plate is fixed in contact with the upper face of the temperature control plate and the mounting plate is in contact with the upper face of the base plate in a state where the mounting plate is able to glide over the upper face of the base plate. The SSFBG is fixed to contact an FBG contact portion that is established on the upper face of the mounting plate. The phase modulation portions are formed to be capable of expanding and contracting and, as a result of the expansion and contraction of the phase modulation portions, the phase of the carrier wave of the optical pulse signal that is propagated by the phase modulation portions can be changed.
摘要:
A diazonium salt for a color-forming layer of a thermosensitive recording medium, having formula (1): ##STR1## wherein R is an alkyl group having four carbon atoms which is selected from the group consisting of n-butyl, t-butyl, and sec-butyl, and X.sup.- is selected from the group consisting of hexafluorophosphate ion PF.sub.6.sup.-, tetrafluoroborate ion BF.sub.4.sup.- and tetraphenylborate ion (C.sub.6 H.sub.5).sub.4 B.sup.-. In a first embodiment, a thermosensitive recording medium has a color-forming layer which includes a diazonium salt as described above, a basic compound and a coupler. In a second embodiment, a thermosensitive recording medium has a color-forming layer which includes: a diazonium salt, a basic compound, and a coupler, wherein the diazonium salt has a formula (2): ##STR2## where R.sup.1 and R.sup.2 are alkyl groups each having one or more carbon atoms, and X.sup.- is selected from the group consisting of hexafluorophosphate ion PF.sub.6.sup.-, tetrafluoroborate ion BF.sub.4.sup.- and tetraphenylborate ion (C.sub.6 H.sub.5).sub.4 B.sup.-.