公开(公告)号：US5801879A

公开(公告)日：1998-09-01

申请号：US878262

申请日：1997-06-18

Applicant: Clement Dowd Burton ,  Douglas Warren Hall

Inventor： Clement Dowd Burton ,  Douglas Warren Hall

IPC: H01S3/10 ,  G01F1/00 ,  G02B6/34 ,  H01S3/00 ,  H01S3/06 ,  H01S3/067 ,  H01S3/11 ,  H04B10/17 ,  H04J14/00 ,  H04J14/02 ,  H04B9/00

CPC classification number: G02B6/2937 ,  H01S3/0064 ,  H01S3/10023 ,  H04B10/2912 ,  H04B10/2971 ,  H01S3/06787

Abstract: An improved four-port dichroic WDM, for use in a multiwavelength, bi-directional optical amplifier, having a dichroic filter for substantially reflecting a first wavelength band input to the WDM to an output of the WDM for the first wavelength band and for substantially transmitting a second wavelength band input to the WDM to an output of the WDM for the second wavelength band, in which some of a first 3 dB wavelength in the first wavelength band is transmitted by the filter and some of a second 3 dB wavelength in the second wavelength band is reflected by the filter, includes another dichroic filter having a filter function different than the filter function of the WDM filter providing an insertion loss for the first or the second 3 dB wavelengths sufficient to reflect and transmit, respectively, substantially all of the first and second 3 dB wavelengths. Additional dichroic filters for suppressing 3 dB light are used to prevent Q-switching in an optical gain cavity in a multiwavelength, bi-directional optical amplifier formed by a reflection point in an optical path connected to the amplifier.

Abstract translation: 一种改进的四端口二向色WDM，用于多波长双向光放大器，具有二向色滤波器，用于将第一波长带输入到WDM基本上反射到第一波长带的WDM的输出端并用于基本上发射 输入到WDM的第二波长带到第二波长带的WDM的输出，其中第一波长带中的第一3dB波长中的一些通过滤波器传输，并且在第二波长带中传输第二3dB波长的一些 波长带由滤波器反射，包括具有不同于WDM滤波器的滤波器功能的滤波器功能的另一个二向色滤波器，其为第一或第二3dB波长提供足够的插入损耗，足以分别反映和传输基本上所有的 第一和第二3dB波长。 用于抑制3dB光的附加二向色滤光器用于防止由连接到放大器的光路中的反射点形成的多波长双向光放大器中的光学增益腔中的Q开关。

公开(公告)号：US07173756B2

公开(公告)日：2007-02-06

申请号：US10906382

申请日：2005-02-17

Applicant: John Zyskind ,  Andrew Niall Robinson ,  Seo Yeon Park ,  Clement Dowd Burton ,  John Jacob ,  Erik Robert Thoen

Inventor： John Zyskind ,  Andrew Niall Robinson ,  Seo Yeon Park ,  Clement Dowd Burton ,  John Jacob ,  Erik Robert Thoen

IPC: H01S3/00

CPC classification number: H01S3/06758 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/1608 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/2935

Abstract: An optical communications system includes a plurality of optical fiber spans. An optical loss of one of the plurality of optical fiber spans is different from an optical loss of another one of the plurality of optical fiber spans. At least one of the plurality of optical fiber spans includes an optical loss that is greater than or equal to 35 dB and at least one of the plurality of optical fiber spans includes an optical loss that is less than 30 dB. An optical amplification system includes at least one discrete optical amplifier, at least one distributed optical amplifier, and an optical loss element. The optical amplification system has spectral gain that compensates for substantially all losses experienced by the optical signals propagating in the plurality of optical fiber spans.

Abstract translation: 光通信系统包括多个光纤跨段。 多个光纤跨度中的一个的光损耗不同于多个光纤跨段中的另一个的光损耗。 多个光纤跨度中的至少一个包括大于或等于35dB的光损耗，并且多个光纤跨度中的至少一个包括小于30dB的光损耗。 光放大系统包括至少一个分立光放大器，至少一个分布式光放大器和光损耗元件。 光放大系统具有光谱增益，其补偿在多个光纤跨段中传播的光信号所经历的基本上所有的损耗。