公开(公告)号：US06934078B2

公开(公告)日：2005-08-23

申请号：US10299306

申请日：2002-11-19

Applicant: Seong-Taek Hwang ,  Sung-Tae Kim ,  Sung-Jin Park

Inventor： Seong-Taek Hwang ,  Sung-Tae Kim ,  Sung-Jin Park

IPC: H01S3/10 ,  G02B6/00 ,  H01S3/067 ,  H01S3/16 ,  H04B10/12

CPC classification number: H01S3/06754 ,  H01S3/06725 ,  H01S3/06758 ,  H01S3/1608

Abstract: Disclosed is dispersion-compensated erbium-doped fiber amplifier. The disclosed fiber amplifier comprises a first fiber amplifying unit, a second fiber amplifying unit arranged downstream from the first fiber amplifying unit while being connected in series to the first fiber amplifying unit, an optical fiber connected in parallel between the first and second fiber amplifying units and adapted to re-use a residual light, remaining after an amplification operation of the first fiber amplifying unit, as a pumping light for the second fiber amplifying unit, a fiber reflector for reflecting an optical signal amplified in the second fiber amplifying unit, thereby causing the reflected optical signal to flow backward towards the second fiber amplifying unit, a circulator for guiding the amplified optical signal, reflected to flow backward by the fiber reflector and dispersion-compensated by a dispersion compensating fiber, to flow along a path different from that of the amplified optical signal applied to the circulator while preventing an amplified spontaneous emission (ASE) generated during an amplification operation of the second fiber amplifying unit from flowing backward towards the first fiber amplifying unit, and the dispersion compensating fiber is arranged between the circulator and the second fiber amplifying unit and adapted to compensate for dispersion of the amplified optical signal.

Abstract translation: 公开了色散补偿掺铒光纤放大器。 所公开的光纤放大器包括第一光纤放大单元，第二光纤放大单元，布置在与第一光纤放大单元串联连接的同时与第一光纤放大单元串联连接的第二光纤放大单元，并联在第一和第二光纤放大单元之间的光纤 并且适于在第一光纤放大单元的放大操作之后残留的剩余光作为用于第二光纤放大单元的泵浦光，用于反射在第二光纤放大单元中放大的光信号的光纤反射器，从而 使反射的光信号向后朝向第二光纤放大单元流动，用于引导被光纤反射器向后反射并被色散补偿光纤进行色散补偿的放大的光信号的循环器沿着不同于该光纤的路径流动 的放大光信号，同时防止放大的自发 在第二光纤放大单元的放大操作期间产生的有利发射（ASE）向后朝向第一光纤放大单元流动，并且色散补偿光纤被布置在循环器和第二光纤放大单元之间，并且适于补偿 放大光信号。

公开(公告)号：US20050081787A1

公开(公告)日：2005-04-21

申请号：US10951937

申请日：2004-09-28

Applicant: Ki-Vin Im ,  Sung-Tae Kim ,  Young-Sun Kim ,  Gab-Jin Nam ,  In-Sung Park ,  Eun-Ae Chung ,  Ki-Yeon Park ,  Seung-Hwan Lee

Inventor： Ki-Vin Im ,  Sung-Tae Kim ,  Young-Sun Kim ,  Gab-Jin Nam ,  In-Sung Park ,  Eun-Ae Chung ,  Ki-Yeon Park ,  Seung-Hwan Lee

IPC: H01L21/205 ,  C23C16/44 ,  C23C16/455 ,  C23C16/00

CPC classification number: C23C16/45544

Abstract: Methods of supplying a source to a reactor include charging a gaseous source into a charging volume by selectively activating a source charger coupled between the charging volume and a source reservoir. The gaseous source is then supplied from the charging volume into a deposition process reactor by selectively activating a source supplier coupled between the charging volume and the reactor after the gaseous source in the charging volume attains a desired internal pressure. Apparatus for supplying a source and methods and apparatus for depositing an atomic layer are also provided.

Abstract translation: 向反应器供应源的方法包括通过选择性地启动耦合在充电容积和源储存器之间的源极充电器将气态源充电到充电容积中。 然后，在充电容积中的气体源达到期望的内部压力之后，通过选择性地启动耦合在充电容积和反应器之间的源供应器，将气态源从充电容积供应到沉积工艺反应器中。 还提供了用于提供源的装置和用于沉积原子层的方法和装置。

公开(公告)号：US5715098A

公开(公告)日：1998-02-03

申请号：US582618

申请日：1996-01-04

Applicant: Sung-Tae Kim

Inventor： Sung-Tae Kim

IPC: G02B9/62 ,  G02B13/00 ,  G02B13/02 ,  G02B9/14

CPC classification number: G02B13/006 ,  G02B13/005 ,  G02B13/04 ,  G02B9/62

Abstract: Disclosed is a telephoto-type lens system of a head separated charge coupled device (CCD) camera, which includes a first lens group having a positive focal length, a second lens group having a negative focal length, and a third lens group. The first lens group has a first convex lens surface facing an object and an upper convex surface. The third lens group has a second lens with a negative focal length joined to a first lens with a positive focal length. An image angle greater than 29.degree. and high definition images can be achieved with the present invention.

Abstract translation: 公开了一种头分离电荷耦合器件（CCD）照相机的长焦型透镜系统，其包括具有正焦距的第一透镜组，具有负焦距的第二透镜组和第三透镜组。 第一透镜组具有面向物体的第一凸透镜表面和上凸面。 第三透镜组具有连接到具有正焦距的第一透镜的负焦距的第二透镜。 本发明可以实现大于29度的图像角度和高分辨率图像。