Bismuth blended germanium base optical glass

An optical glass and germanium-based technology, which is applied in the field of bismuth-doped germanium-based optical glass, can solve the problems of increasing transmission bandwidth, increasing transmission rate, and restricting the number of optical fiber wavelength channels.

Inactive Publication Date: 2005-03-02
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

Its disadvantage is that the gain bandwidth of C-Band EDFA is only 35nm, which only covers a part of the low-loss window of quartz single-mode fiber, which restricts the number of wavelength channels that the fiber can inherently accommodate; however, with the rapid development of Internet technology and the acceleration of the information process , the transmission capacity of the optical fiber transmission system is required to be continuously expanded, and there are currently three main solutions to expand the transmission capacity: (1) increase the transmission rate of each wavelength; (2) reduce the channel spacing; (3) increase the total transmission bandwidth
For the first method, if the rate is increased

Method used

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  • Bismuth blended germanium base optical glass
  • Bismuth blended germanium base optical glass
  • Bismuth blended germanium base optical glass

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0030] Table 1, Table 2, Table 3 and Table 4 have listed M=Al in the glass composition of the present invention respectively 2 o 3 , Ta 2 o 5 , Ga 2 o 3 , B 2 o 3 Composition and molar percentage thereof of four groups of examples, the color of corresponding glass, fluorescence position and half maximum width thereof, the test result of fluorescence lifetime, wherein embodiment 1, 4, 21, 24, 31, 34, 41 and 44 are comparative example.

[0031] Example group 1

[0032] The preparation method is as follows: Weigh about 20g of the ingredients according to the ratio in Table 1, grind them in an agate mortar for half an hour, then pre-fire at 500°C for 7 hours, take them out and grind them, and then melt them at 1550°C for 2 hours, so that In order to completely eliminat...

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Abstract

The Bi doped germanium base optical glass has the molar composition of: GeO2 90-99.98 mol%, M 0.01-9 mol%, Bi2O3 0.01-5 mol%, where M is Al2O3, Ta2O5, Ga2O3 or B2O3. The glass has absorption spectrum covering the area from visible light to near infrared, central fluorescent spectrum wavelength in 1300 nm, fluorescent life greater than 0.2 ms and fluorescent full width at half maximum greater than 200 nm, and may be pumped with laser of 532 nm, 632.5 nm and 808 nm wavelength. These kinds of optical glass are expected to find the use in ultra wide band amplifier, high power laser, tunable laser and other technological fields.

Description

technical field [0001] The invention relates to optical glass, especially a kind of bismuth-germanium-doped optical glass. The glass can emit fluorescence in the near-infrared communication band, has a long fluorescence lifetime and a wide gain bandwidth, and is suitable for use as a gain medium in optical amplifiers and / or lasers. . Background technique [0002] On March 4, 1998, Yasushi Fujimoto of Mitsubishi Cable Industries Co., Ltd. applied for a patent entitled "Manufacturing Method of Bismuth-doped Quartz Glass, Optical Fiber and Optical Amplifier" (Patent Publication Hei 11-29334). They used bismuth-exchanged zeolite as a dispersion medium, integrated the sol-gel method and high-temperature melting method, prepared bismuth-doped quartz glass, drew the corresponding optical fiber, and achieved optical amplification at 1.3 μm under 0.81 μm pumping. The fluorescence peak of this glass is located near 1130nm, the maximum fluorescence half-maximum width is 250nm, the max...

Claims

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Application Information

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IPC IPC(8): C03C3/253
CPCC03C3/253
Inventor 彭明营孟宪赓邱建荣陈丹平姜雄伟
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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