公开(公告)号：US06916753B2

公开(公告)日：2005-07-12

申请号：US10331353

申请日：2002-12-31

Applicant: Doo Hee Cho ,  Yong Gyu Choi ,  Hong Seok Seo ,  Bong Je Park

Inventor： Doo Hee Cho ,  Yong Gyu Choi ,  Hong Seok Seo ,  Bong Je Park

IPC: C03C3/112 ,  C03C3/06 ,  C03C3/11 ,  C03C4/00 ,  C03C13/04 ,  C03C4/12

CPC classification number: C03C3/11 ,  C03C3/06 ,  C03C4/0071 ,  C03C13/046

Abstract: The present invention is a thulium doped silicate glass having an excellent fluorescent emission in the 1.4 μm band, and the usage thereof. The silicate glass of this invention includes: 65˜95 mol % SiO2; 0.5˜30 mol % bivalent metal oxide consisting of one or more material selected from ZnO, BaO, SrO and PbO; and 1˜15 mol % of SnO2 or TiO2, wherein 3˜30 mol % oxygen of the glass composition are replaced with fluorine, and 0.01˜1 mol % of thulium ions are doped, and the fluorescence lifetime of the 3H4 level of the Tm3+ is more than 50 μs. The silicate glass can be easily formed into a waveguide, such as optical fiber, and it has an excellent ability to splice with the optical fiber for transmission. They have excellent chemical durability and the characteristic of 1.4 μm band fluorescent emission by suppressing the non-radiative transition through multi-phonon relaxation. Thus they have long fluorescence lifetime of the 3H4 of Tm3+.

Abstract translation: 本发明是在1.4mum带中具有优异的荧光发射的掺doped硅酸盐玻璃及其用途。 本发明的硅酸盐玻璃包括：65〜95摩尔％的SiO 2; 由选自ZnO，BaO，SrO和PbO的一种或多种材料组成的0.5〜30mol％的二价金属氧化物; 和1〜15mol％的SnO 2或TiO 2，其中3〜30mol％的玻璃组合物的氧被氟代替，0.01〜1mol％的 ium离子被掺杂，并且Tm 3+ 3+的“3”4“4”水平的荧光寿命大于50微米。 硅酸盐玻璃可以容易地形成诸如光纤的波导，并且具有极好的与光纤进行接合的传输能力。 它们通过抑制通过多声子弛豫的非辐射跃迁具有优异的化学耐久性和1.4mum带荧光发射的特征。 因此，它们具有Tm 3+ 3+的3 H 4 H 4的长荧光寿命。

公开(公告)号：US06853480B2

公开(公告)日：2005-02-08

申请号：US10329501

申请日：2002-12-27

Applicant: Yong Gyu Choi ,  Bong Je Park ,  Hong Seok Seo ,  Doo Hee Cho ,  Kyong Hon Kim ,  Tae Hoon Lee ,  Jong Heo

Inventor： Yong Gyu Choi ,  Bong Je Park ,  Hong Seok Seo ,  Doo Hee Cho ,  Kyong Hon Kim ,  Tae Hoon Lee ,  Jong Heo

IPC: G02B6/00 ,  H01S3/094 ,  H01S3/16 ,  H01S3/00

CPC classification number: H01S3/094003 ,  H01S3/161

Abstract: The present invention relates to a main wavelength band of a pump light source capable of improving the pump efficiency while using 1.6 μm fluorescence emitted from Ho3+:5I5→5I7 transition as an optical amplifier, and an assistant pump wavelength band capable of accomplishing population inversion between 5I5 level and 5I7 level to improve the signal gain characteristics of such amplifier. The optical amplifier using optical materials to which holmium or holmium and terbium, holmium and europium, holmium and neodymium or holmium and dysprosium, etc. are doped can be pumped using a light source that emits light of 11,200˜11,500 cm−1 or a light source that emits light of 6,000˜6,500 cm−1.

Abstract translation: 本发明涉及一种泵浦光源的主波长带，能够提高泵效率，同时使用从Ho 3+发射的1.6μm荧光作为光放大器，以及 能够实现<5> I5电平和<5> I7电平之间的总体反转的辅助泵波长带，以改善这种放大器的信号增益特性。 使用掺杂有钬或钬和铽，钬和铕，钬和钕或钬和镝等的光学材料的光放大器可以使用发射11,200〜11500cm -1的光的光源来泵浦，或 发出6,000〜6,500厘米-1的光的光源。

公开(公告)号：US06845185B2

公开(公告)日：2005-01-18

申请号：US10123337

申请日：2002-04-15

Applicant: Kyong Hon Kim ,  Joon Tae Ahn ,  Yong Gyu Choi ,  Doo-Hee Cho

Inventor： Kyong Hon Kim ,  Joon Tae Ahn ,  Yong Gyu Choi ,  Doo-Hee Cho

IPC: G02B6/293 ,  G02B6/34 ,  G02B6/35 ,  H04J14/02 ,  H04Q11/00 ,  G02B6/12

CPC classification number: G02B6/12004 ,  G02B6/12007 ,  G02B6/12021 ,  G02B6/356 ,  H04J14/02 ,  H04J14/0221 ,  H04Q11/0005 ,  H04Q2011/0011 ,  H04Q2011/0016 ,  H04Q2011/0024

Abstract: A high-speed wavelength channel selector has properties of relatively easy manufacturing and easy extension to multi-channel integration, and a high-speed space and wavelength multiplexed channel selector uses the high-speed wavelength channel selector. The high-speed wavelength channel selector is integrated with electro-optic waveguide switches of non-crystalline materials, such as electro-optic polymers or glasses, in the middle of a pair of wavelength multiplexer and demultiplexer and the high-speed space and wavelength multiplexed channel selector has the photonic integrated circuit-type composition of a space multiplexed channel selector containing M electro-optic waveguide switches and an M×1 channel combiner, the high-speed wavelength channel selector, optical amplifier and a high-speed wavelength converter.

Abstract translation: 高速波长通道选择器具有制造相对容易，易于扩展到多通道集成的特点，高速空间和波长复用通道选择器使用高速波长通道选择器。 高速波长通道选择器与一对波长多路复用器和解复用器中间的非晶体材料如电光聚合物或眼镜的电光波导开关集成在一起，并且高速空间和波长多路复用 通道选择器具有包含M个电光波导开关和Mx1通道组合器的空间复用通道选择器的光子集成电路型组合，高速波长通道选择器，光放大器和高速波长转换器。

公开(公告)号：US06873774B2

公开(公告)日：2005-03-29

申请号：US10329544

申请日：2002-12-27

Applicant: Hong-Seok Seo ,  Yong Gyu Choi ,  Kyong Hon Kim

Inventor： Hong-Seok Seo ,  Yong Gyu Choi ,  Kyong Hon Kim

IPC: G02B6/02 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/17 ,  H01S3/30 ,  G02B6/16

CPC classification number: C03C13/046 ,  G02B6/02 ,  G02B6/02261 ,  G02B6/02271 ,  H01S3/0941 ,  H01S3/1691 ,  H01S3/1695 ,  H01S3/176 ,  H01S3/302

Abstract: The present invention relates to a transmission optical fiber. The transmission optical fiber including a core and a cladding made of SiO2 is characterized in that GeO2 and F are doped in SiO2 of the core and the cladding. Therefore, a high Raman gain coefficient could be obtained while a desired dispersion value and a non-linearity are maintained, by controlling the refractive index of the core and the cladding. Further, the pump power of the laser diode could be reduced and the cost of the laser diode could be lowered accordingly. In addition, the life of the laser diode is extended since the laser diode needs not to be operated at a high output.

Abstract translation: 本发明涉及一种传输光纤。 包括芯和由SiO 2制成的包层的透射光纤的特征在于，GeO 2和F掺杂在芯和包层的SiO 2中。 因此，通过控制芯和包层的折射率，可以获得期望的色散值和非线性的高拉曼增益系数。 此外，可以减少激光二极管的泵浦功率，并且可以相应地降低激光二极管的成本。 此外，激光二极管的寿命延长，因为激光二极管不需要在高输出下工作。

公开(公告)号：US06538804B1

公开(公告)日：2003-03-25

申请号：US09433455

申请日：1999-11-04

Applicant: Kyong Hon Kim ,  Yong Gyu Choi ,  Hak Kyu Lee ,  Min Yong Jeon ,  Joon Tae Ahn ,  Dong Sung Lim ,  Ho Young Kim ,  Do Il Chang

Inventor： Kyong Hon Kim ,  Yong Gyu Choi ,  Hak Kyu Lee ,  Min Yong Jeon ,  Joon Tae Ahn ,  Dong Sung Lim ,  Ho Young Kim ,  Do Il Chang

IPC: H01S300

CPC classification number: G02F1/3132 ,  G02F1/225 ,  H01S5/4068 ,  H01S5/50

Abstract: A planar waveguide-type optical amplifier switch is disclosed. The switch is developed with the purpose of solving the problems that the conventional waveguide-type optical switch, which has been being used in the optical communication technique, has an optical loss and thereby requires an external optical amplifier which makes the whole devices not suitable for forming an integrated compact device. The disclosed switch performs switching function from the refractive index change in the optical waveguides induced by electrical or optical controls as well as amplifying function of the optical signal, when it passes through the waveguides, from use of optical waveguides formed of a fluorescence emitting material with an optical pumping and a wavelength division multiplexing (WDM) optical waveguide-type coupler. The optical amplifier switch scheme, which provides a simultaneous optical switching and amplification in an optical waveguide form, allows the device fabricable in a compact integrated manner and more useful in practical applications. The optical amplifier switch in accordance with the present invention can replace the conventional optical switches of the prior art, and can promote technical development in the areas of high-capacity optical communication systems, massive optical signal processing, optical switching, optical computing, and so on.

Abstract translation: 公开了一种平面波导型光放大器开关。 开关是为了解决在光通信技术中使用的常规波导型光开关具有光损耗并因此需要外部光放大器的问题而开发的，这使得整个器件不适合于 形成集成的紧凑型装置。 所公开的开关从通过电光或光控制引起的光波导中的折射率变化执行切换功能，以及当光信号通过波导时放大功能，使用由荧光发射材料形成的光波导与 光泵浦和波分复用（WDM）光波导型耦合器。 提供光波导形式的同时光切换和放大的光放大器开关方案允许该器件以紧凑的集成方式可制造并且在实际应用中更有用。 根据本发明的光放大器开关可以代替现有技术的传统光开关，并且可以促进大容量光通信系统，大规模光信号处理，光交换，光计算等领域的技术发展。 上。

公开(公告)号：US06490082B2

公开(公告)日：2002-12-03

申请号：US09728163

申请日：2000-12-02

Applicant: Yong Gyu Choi ,  Kyong Hon Kim

Inventor： Yong Gyu Choi ,  Kyong Hon Kim

IPC: H04B1012

CPC classification number: C03C3/321 ,  H01S3/06754 ,  H01S3/1613 ,  H01S3/17 ,  H01S3/172 ,  H01S2302/00

Abstract: An optical amplifier of the present invention is implemented by using a low phonon energy glass doped with praseodymium ions (Pr3+), whereby a wavelength of 1.6 &mgr;m band can be used for an optical transmission. The optical amplifier for amplifying an optical signal includes a low phonon energy optical medium doped with praseodymium ions (Pr3+) for utilizing as a gain medium to the optical signal, and a pumping means for pumping the low phonon energy optical medium, thereby to obtain an amplified optical signal.

公开(公告)号：US06404788B1

公开(公告)日：2002-06-11

申请号：US09373968

申请日：1999-08-13

Applicant: Yong Gyu Choi ,  Kyong Hon Kim ,  Hak Kyu Lee ,  Dong Sung Lim

Inventor： Yong Gyu Choi ,  Kyong Hon Kim ,  Hak Kyu Lee ,  Dong Sung Lim

IPC: H01S314

CPC classification number: H01S3/16 ,  H01S3/06716 ,  H01S3/1618 ,  H01S3/1623

Abstract: Provided are complex optical material that trivalent ytterbium ion is codoped into single crystalline, poly crystalline or amorphous material containing tetravalent chromium ion or trivalent vanadium ion as an active medium, and a using method of the material. In application of the material to solid-state lasers, optical fiber amplifiers and the likes, when excitation occurs in the 980 nm wavelength band in which absorption strongly occurs at the ytterbium ion with avoiding the wavelength range of 600˜800 nm in which the excited-state absorption occurs at the chromium ion, the energy is transferred from the ytterbium ion to the chromium ion to emit fluorescence in the range of 1200˜1600 nm wavelength. Accordingly, the present invention is to solve the problem of the excitation efficiency decrease of the tetravalent chromium ion due to the excited-state absorption and to enhance the fluorescence emission intensity.

Abstract translation: 提供三价镱离子共掺杂成含有四价铬离子或三价钒离子作为活性介质的单晶，多晶或无定形材料的复合光学材料，以及该材料的使用方法。 在将材料应用于固态激光器，光纤放大器等中，当激发发生在980nm波长带中，其中在镱离子处强烈地发生吸收，避免了600〜800nm的波长范围，其中激发 - 在铬离子处发生 - 状态吸收，能量从镱离子转移到铬离子，以在1200〜1600nm波长范围内发射荧光。 因此，本发明是为了解决由激发态吸收引起的四价铬离子的激发效率降低的问题，提高荧光发光强度。

公开(公告)号：US06459846B1

公开(公告)日：2002-10-01

申请号：US09498321

申请日：2000-02-04

Applicant: Yong Gyu Choi ,  Dong Sung Lim ,  Kyong Hon Kim ,  Hak Kyu Lee

Inventor： Yong Gyu Choi ,  Dong Sung Lim ,  Kyong Hon Kim ,  Hak Kyu Lee

IPC: G02B600

CPC classification number: H01S3/06708 ,  H01S3/06716

Abstract: The present invention relates to a complex rare-earths doped optical waveguide. In particular, the complex rare-earths doped optical waveguide in accordance with an embodiment of the present invention is for modifying emission spectrum of erbium that is able to obtain gain from shorter wavelength than 1530 nm. A complex rare-earths doped optical wavelength is provided. The complex rare-earths doped optical waveguide in accordence with an embodiment of the present invention includes clad and core. The core is doped with erbium (Er) ion. The internal or surface of the core is doped with at least one complex rare-earth ions. The internal and the surface of the core is distanced by certain length from center of the core.

Abstract translation: 本发明涉及一种复合稀土掺杂光波导。 特别地，根据本发明实施例的复合稀土掺杂光波导用于修改能够从比1530nm的较短波长获得增益的铒的发射光谱。 提供了复杂的稀土掺杂光波长。 根据本发明的实施例的复合稀土掺杂光波导包括包层和芯。 核心掺杂有铒（Er）离子。 芯的内部或表面掺杂有至少一种复合稀土离子。 芯的内部和表面与芯的中心距离一定长度。