公开(公告)号：US06570701B1

公开(公告)日：2003-05-27

申请号：US09624245

申请日：2000-07-24

申请人： Seong-Tank Hwang ,  Soo-Young Yoon ,  Rae-Sung Jung ,  Jeong-Moo Kim ,  Sung-Jun Kim

发明人： Seong-Tank Hwang ,  Soo-Young Yoon ,  Rae-Sung Jung ,  Jeong-Moo Kim ,  Sung-Jun Kim

IPC分类号： H04B1012

CPC分类号： H04B10/2537

摘要： A long-band (L-band) light source capable of testing the characteristics of optical elements using a feedback loop in a fiber amplifier of an optical communication system. In the fiber amplifier including (a) a rare earth doped fiber as an amplification medium, (b) forward and backward pump laser diodes, positioned on front and rear ends of the rare earth doped fiber, for generating and providing pumping lights to the rare earth doped fiber, (c) first wavelength selective couplers for providing the pumping lights from the forward and backward pump laser diodes to the rare earth doped fiber, and (d) optical isolators, inserted between front and rear ends of the first wavelength selective couplers, respectively, for intercepting backward lights reflected from input and output terminals of the fiber amplifier, the L-band light source comprises a feedback loop for making a seed beam incident to the rare earth doped fiber or making an amplified spontaneous emission (ASE) incident again to the rare earth doped fiber to reuse the seed beam or the ASE as the L-band light source for testing the optical elements, second wavelength selective couplers, provided between the optical isolators and the first wavelength selective couplers, respectively, for making the seed beam incident to the feedback loop or extracting and providing the ASE to the feedback loop, and a forward optical isolator, connected to the feedback loop, for intercepting a backward propagation of the seed beam or the ASE. The L-band light source can accurately test the characteristics of various kinds of optical elements used for optical communications.

摘要翻译： 一种能够在光通信系统的光纤放大器中使用反馈回路来测试光学元件的特性的长带（L波段）光源。 在包括（a）稀土掺杂光纤作为放大介质的光纤放大器中，（b）位于稀土掺杂光纤的前端和后端的前向和后向泵激光二极管，用于产生和提供泵浦光到罕见的 （c）第一波长选择耦合器，用于将来自前向和后向泵浦激光二极管的泵浦光提供到稀土掺杂光纤;以及（d）插入在第一波长选择耦合器的前端和后端之间的光隔离器 分别用于截取从光纤放大器的输入和输出端子反射的向后光，L波段光源包括用于使种子光束入射到稀土掺杂光纤或进行放大的自发发射（ASE）事件的反馈回路 再次将稀土掺杂的光纤重新使用种子束或ASE作为L波段光源进行光学元件的测试，第二波长选择耦合器提供betw 分别使光隔离器和第一波长选择耦合器用于使种子射束入射到反馈回路，或者将ASE提供给反馈回路，以及连接到反馈回路的正向光隔离器，用于截取后向 种子束或ASE的传播。 L波段光源可以准确地测试用于光通信的各种光学元件的特性。