摘要:
A high performance dispersion compensating optical fiber is provided. In one embodiment, the optical fiber includes a core layer and a cladding layer surrounding the core layer. The core layer includes five core sublayers wherein the □% of the first core sublayer is positive, and the □% of at least one of the other core sublayers is negative, the radius ranges of the respective core sublayers beginning outwardly from the first core sublayer are 0.6 to 0.8 μm, 1.0 to 1.2 μm, 1.6 to 2.0 μm, 5.0 to 6.0 μm, and 7.0 to 8.0 μm, respectively; the ranges of □% of the respective sublayers beginning outwardly from the first core sublayer are about 1.8 to 2.1%, 1.2 to 1.4%, 0.6 to 1%, −0.4 to −0.6% and 0.2 to 0.4%, and the cladding layer is a pure Silicon Dioxide glass layer.
摘要:
A high performance dispersion compensating optical fiber is provided. In one embodiment, the optical fiber includes a core layer and a cladding layer surrounding the core layer. The core layer includes five core sublayers wherein the □% of the first core sublayer is positive, and the □% of at least one of the other core sublayers is negative, the radius ranges of the respective core sublayers beginning outwardly from the first core sublayer are 0.6 to 0.8 μm, 1.0 to 1.2 μm, 1.6 to 2.0 μm, 5.0 to 6.0 μm, and 7.0 to 8.0 μm, respectively; the ranges of □% of the respective sublayers beginning outwardly from the first core sublayer are about 1.8 to 2.1%, 1.2 to 1.4%, 0.6 to 1%, −0.4 to −0.6% and 0.2 to 0.4%, and the cladding layer is a pure Silicon Dioxide glass layer.
摘要:
A high performance dispersion compensating optical fiber is provided. In one embodiment, the optical fiber includes a core layer and a cladding layer surrounding the core layer. The core layer includes five core sublayers wherein the □ % of the first core sublayer is positive, and the □ % of at least one of the other core sublayers is negative, the radius ranges of the respective core sublayers beginning outwardly from the first core sublayer are 0.6 to 0.8 μm, 1.0 to 1.2 μm, 1.6 to 2.0 μm, 5.0 to 6.0 μm, and 7.0 to 8.0 μm, respectively; the ranges of □ % of the respective sublayers beginning outwardly from the first core sublayer are about 1.8 to 2.1%, 1.2 to 1.4%, 0.6 to 1%, −0.4 to −0.6% and 0.2 to 0.4%, and the cladding layer is a pure Silicon Dioxide glass layer.
摘要:
The invention relates to a low dispersion slope dispersion-shifted single-mode fiber for large capacity transmission comprising a core and a cladding. Said fiber is characterized in that said core has three to five core segments having different refractive index profiles, and said cladding has four to six cladding segments. The total dispersion slope of said fiber at 1550 nm is less than 0.060 ps/nm2·km, the zero dispersion wavelength is less than 1420 nm, the effective area ranges from 55 μm2 to 65 μm2, and the dispersion in the region of 1530 nm˜1565 nm ranges from 5.0 ps/nm2·km to 12.0 ps/nm2·km. The fiber has low dispersion slope, moderate dispersion, low attenuation, and excellent bend resistance performance. It is suitable for a high-speed (10 Gbits/s and 40 Gbits/s), large capacity, and long distance DWDM system. Therefore, not only the non-linear problem that fazes high-speed communication is solved effectively, but also the DWDM transmission at 10 Gbits/s can be realized within a wider wavelength range. In addition, low dispersion slope is advantageous for comprehensive management of dispersion, so that the requirement for long distance non-electric relay can be fulfilled.
摘要:
Three new crystalline forms of pemetrexed diacid, preparation methods and uses thereof are disclosed. These preparation processes are simple and have better practicality.
摘要:
A single mode fiber having a core, an inner cladding, a depressed cladding, and an outer cladding composed of pure silica glass. The core is surrounded in sequence with the inner cladding and the depressed cladding. The core has silica glass doped with germanium and fluorine, with a diameter (a) of 8.0-8.8 μm, a relative refractive index difference (Δ1) of 0.35-0.38%, and the contribution of fluoride (ΔF) is −0.09±0.02%. The inner cladding has silica glass doped with germanium and fluorine, with a diameter (b) of 18-21 μm and a relative refractive index difference (Δ2) of 0±0.02%. The depressed cladding has silica glass doped with fluorine, with a diameter (c) of 26-36 μm and a relative refractive index difference (Δ32) at the external interface thereof is between −0.22 and −0.35%, and a relative refractive index difference (Δ31) at the internal interface thereof is between −0.20 and −0.35%, and Δ32≦Δ31. The fiber has a good bending resistance, good mechanical properties, and extended service lifetime, and prevents the additional stresses generated by bending from passing on to the core, thereby reducing attenuation.
摘要:
A febuxostat which purity is not less than 99.0%, method for preparation thereof, and pharmaceutical composition thereof. The method for preparation includes recrystallizing febuxostat in a mixed solvent. The said pharmaceutical composition can be used in manufacture of medicaments for treating diseases associated with hyperuricemia.
摘要:
Three new crystalline forms of pemetrexed diacid, preparation methods and uses thereof are disclosed. These preparation processes are simple and have better practicality.
摘要:
A display device is provided. The display device includes a liquid crystal display (LCD) panel for displaying images, a first electrode layer, and a second electrode layer coupled to the first electrode layer. The display device also includes a first driving circuit configured to provide a first driving signal and a second driving circuit configured to provide a second driving signal. Further, the display device includes a coupling unit coupled to the first driving circuit and the second driving circuit and configured to couple the first driving signal and the second driving signal, and to provide the coupled signal of the first driving signal and second driving signal to both of the first electrode layer and the second electrode layer such that the first driving signal drives the LCD panel for displaying the images, and the second driving signal drives the LCD panel for being touch-sensitive. The display device also includes a signal separation unit coupled to at least one of the first electrode layer and the second electrode layer to receive a feedback signal indicating a capacitance change corresponding to a touch on the LCD panel.