摘要:
A light source device comprises a light source for outputting a light having the first wavelength; a first lens for converting the light into a collimated beam; an optical output unit for outputting a light having the second wavelength; a second lens for converting the light into a collimated beam; and an optical filter, provided between said first lens and the second lens, for passing the light having the first wavelength and reflecting the light having the second wavelength. The optical input unit receives the lights having the first and the second wavelengths collected by the second lens, and outputs a light wavelength-multiplexed through the optical input unit. An optical amplifier is designed by directly connecting a rare earth doped optical fiber to the output side on which a wavelength-multiplexed light of the light source device is output. A wavelength-multiplexed light source can be also designed by serially connecting plural stages of light source devices. In the optical fiber amplifier, a loss generated between a pump light source and a rare earth doped optical fiber can be reduced, and the reduction of a gain can be prevented. Thus, the entire system including the optical fiber amplifier can be much smaller.
摘要:
This invention provides a novel reactive silicon group-containing oxypropylene polymer and a method of producing the same. The reactive silicon group-containing oxypropylene polymer of the invention is an oxypropylene polymer the main polymer chain of which is essentially composed of a repeating unit of the formula and which has at least one reactive silicon group and at least one urethane bond each terminal to the chain, an {overscore (M)}w/{overscore (M)}n ratio of not more than 1.5 and a number average molecular weight of not less than 3,000. The production method of the invention is characterized by reacting an oxypropylene polymer having an {overscore (M)}w/{overscore (M)}n ratio of not more than 1.5 and a number average molecular weight per terminal functional group of not less than 1,500 with a compound having a reactive silicon group and an isocyanato group.
摘要翻译:本发明提供一种新型的含反应性硅基的氧丙烯聚合物及其制造方法。 本发明的含反应性硅基的氧化丙烯聚合物是其主要聚合物链基本上由下式的重复单元组成的氧化丙烯聚合物,其具有至少一个反应性硅基团和至少一个氨基甲酸酯键,每个末端连接至链 ,超过(M)} w / {超核(M)} n不大于1.5,数均分子量不小于3,000。 本发明的制备方法的特征在于使具有不超过1.5的{过核(M)} w / {超核(M)} n比的氧化丙烯聚合物和不小于1的每末端官能团的数均分子量 具有反应性硅基和异氰酸酯基的化合物。
摘要:
An optical amplifier for amplifying and outputting an input light signal, comprises an optical light amplifier unit (10), a tunable wavelength filter (30), a signal light detection unit, and a control circuit (100). The optical amplifier unit (10) amplifies the input light signal and outputs an amplified light signal. The tunable wavelength filter (30), into which the amplified light signal is inputted and which transmission light wavelength is swept, outputs a filter output signal. The signal light detection unit detects a signal light level of an amplified output component in the amplified light signal in response to said input light signal. The control circuit (100) controls a gain of said optical amplifier unit based on the signal light level. Further, the signal light detection unit of the optical amplifier according to the present invention comprises a peak detection unit (60) and a background light detection unit (70). The peak detection unit (60) detects a peak light level of the filter output signal. The background light detection unit (70) detects a background light level of the filter output signal.
摘要:
A curable composition is disclosed and comprises the following components.(A) 100 parts by weight of a oxypropylene polymer having a polymer main chain containing a repeating unit represented by the following formula ##STR1## and having at least one group containing a silicon atom bonded to a hydroxyl group and/or a hydrolyzable group and capable of crosslinking by forming a siloxane bond, wherein Mw/Mn thereof is not more than 1.6 and the number average molecular weight is at least 6,000,(B) from 1 to 200 parts by weight of a filler having a BET specific surface area of not higher than 10 m.sup.2 /g, and(C) from 0.1 to 20 parts by weight of a curing catalyst, said composition containing substantially no plasticizer.
摘要:
A process for producing a styrenic polymer having a wide-spread molecular weight distribution, which comprises polymerizing a styrenic monomer or a styrenic monomer and a monomer copolymerizable with the styrenic monomer in the presence of 50 to 5000 ppm by weight of at least one compound selected from compounds having a dithiocarbamate group and sulfide compounds having at least one of an aryl group, an arylalkyl group and a thiazole group based on the total monomer to a final conversion of 40% by weight or more in the absence or presence of a radical initiator subjecting to a suspension polymerization, a batchwise bulk polymerization or a continuous bulk polymerization using a plug flow type polymerization reactor. According to the present invention, there can be provided a simplified process for preparing a styrenic polymer having a wide-spread molecular weight distribution.
摘要:
A curable composition which comprises (A) an oxyalkylene polymer having a silicon-containing group(s) that has a hydroxy group(s) and/or a hydrolyzable group(s) bonded to the silicon atom(s), and can be crosslinked by forming siloxane bond, and (B) hollow microspheres of vinylidene chloride polymer whose true specific gravity is 1 g/cm.sup.3 or less.
摘要翻译:一种可固化组合物,其包含(A)具有与硅原子键合的羟基和/或可水解基团的含硅基团的氧化烯聚合物,并且可以交联 通过形成硅氧烷键,和(B)真比重为1g / cm 3以下的偏二氯乙烯聚合物的中空微球。
摘要:
An organic EL element that exhibits excellent durability by reducing the amount of accumulated carriers and curbing degradation by heat generated while the organic EL element is driven. The organic EL element comprises a pair of a hole injecting electrode and an electron injecting electrode sandwiching an organic luminous layer and an organic carrier transport layer placed one on top of the other to have a boundary therebetween, characterized in that either the organic luminous layer or the organic carrier transport layer, whichever is placed closer to the hole injecting electrode, is doped with a first organic material, the first organic material being made of at least one substance, a minimum level of a conducting band of the first organic material being lower than a minimum level of a conducting band of a material forming the layer to be doped with the first organic material, and the other layer which is placed closer to the electron injecting electrode is doped with a second organic material, the second organic material being made of at least one substance, a maximum level of a valence band of the second organic material being higher than a maximum level of a valence band of the other layer to be doped with the second organic material.
摘要:
There is disclosed an EL element having at least one layer made from an organic material between an electron injection electrode and a hole injection electrode. The organic material consists of an oxadiazole series compound which has a plurality of oxadiazole rings, each of the oxadiazole rings being substituted by a condensed polycyclic aromatic group.
摘要:
In an optical switching device, an optical medium such as a prism and a glass plate is rotatively held on a supporting member by a pivot bearing and a pivot shaft, and the optical medium is rotated, for instance, by a magnetic force so that optical paths are mechanically changed-over. For this construction, the area of the frictional contact surfaces between the pivot bearing and the pivot shaft is decreased thereby providing a stable dynamic characteristic which is maintained for a long time.
摘要:
A solar cell (1) of the present invention includes a photoelectric conversion layer (2) and a photonic crystal provided inside the photoelectric conversion layer (2) in order to have a photonic band gap. The photonic crystal has defects (31) in order to provide a defect level in the photonic band gap. QV which is a Q value representing a magnitude of a resonance effect yielded by coupling between the photonic crystal and an outside is substantially equal to Qα which is a Q value representing a magnitude of a resonance effect yielded by a medium of the photoelectric conversion layer (2).