公开(公告)号：EP0883002B1

公开(公告)日：2000-08-09

申请号：EP98304121.1

申请日：1998-05-26

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Peckham, David W.

IPC: G02B6/16 ,  H04B10/18

CPC classification number: G02B6/02233 ,  G02B6/02242 ,  G02B6/03627 ,  G02B6/03644 ,  H04B10/2525

公开(公告)号：EP1255138A1

公开(公告)日：2002-11-06

申请号：EP01309523.7

申请日：2001-11-12

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Hsu, Lucas ,  Peckham, David W. ,  Reed, William A. ,  Yan, Man Fei

IPC: G02B6/22 ,  G02B6/16

CPC classification number: G02B6/0365 ,  G02B6/02019 ,  G02B6/02242 ,  G02B6/03627 ,  G02B6/03644

Abstract: Embodiments of the invention include a positive dispersion optical fiber (50, 55) that includes a doped core region (51, 56) with an index of refraction n 1 , a cladding region (54, 59) with an index of refraction n 2 , and first (52, 57) and second (53, 58) annular rings or regions therebetween with indices of refraction n 3 and n 4 , respectively. The various regions are manufactured in such a way that the refractive index value ranges are: 0.14 1 -n 2 )/n 2 3 -n 2 )/n 2 4 -n 2 )/n 2 2 -km) at a wavelength of 1550 nm. Also, the fibers have a relatively large effective core area, A eff , for example, greater than 100.0 µm 2 , and a relative dispersion slope (RDS) less than 0.0032 nm -1 . The mode field diameter (MFD) is at least 11.9 ± 0.7 µm. These desirable transmission characteristics are achieved without many of the manufacturing and economic limitations of conventional fibers.

Abstract translation: 本发明的实施例包括正偏振光纤（50,55），其包括具有折射率n1的掺杂核心区域（51,56），具有折射率n2的包层区域（54,59），以及第一 （52,57）和第二（53,58）环形环或其间的折射率分别为n3和n4。 各区域的制造方式为：折射率值范围为：0.14 <（n1-n2）/ n2 <0.31，-0.19 <（n3-n2）/ n2 <-0.02，-0.20 <（n4- n2）/ n2 <-0.08。 在1550nm的波长处，光纤表现出大于20 +/- 2.0ps /（nm-km）的色散和小于0.062ps /（nm 2 -km）的色散斜率。 此外，纤维具有相对大的有效核​​心面积，例如Aeff大于100.0μm2，相对色散斜率（RDS）小于0.0032nm -1。 模场直径（MFD）至少为11.9 +/-0.7μm。 这些期望的传输特性是在常规光纤的许多制造和经济限制的情况下实现的。

公开(公告)号：EP0883002A1

公开(公告)日：1998-12-09

申请号：EP98304121.1

申请日：1998-05-26

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Peckham, David W.

IPC: G02B6/16 ,  H04B10/18

CPC classification number: G02B6/02233 ,  G02B6/02242 ,  G02B6/03627 ,  G02B6/03644 ,  H04B10/2525

Abstract: An optical fiber [10] is disclosed that is suitable for use in wave-division-multiplex (WDM) systems [700] served by Erbium-doped fiber amplifiers [710]. The fiber has a chromatic dispersion whose absolute magnitude is at least 0.8 ps/(nm-km) over the wavelength region 1530 - 1565 nm, and has a dispersion slope that is less than 0.05 ps/(nm 2 -km). This optical fiber exhibits a loss that is less than about 0.20 dB/km and is relatively insensitive to bending; moreover, its effective area exceeds 50 µm 2 . The optical fiber includes a core of transparent material having a maximum refractive index n 1 , and a layer of transparent cladding material on the outer surface of said core having a refractive index n 2 . The core includes an annular region of transparent material whose minimum refractive index, n 3 , is depressed with respect to n 2 . These indexes are constrained by the following equations: 0.50 n 1 - n 2 )/ n 2 and -0.30 n 3 - n 2 )/ n 2 Optical fibers having a low dispersion slope for both positive-dispersion and negative-dispersion applications are shown.

Abstract translation: 公开了一种适用于由掺铒光纤放大器[710]服务的波分复用（WDM）系统[700]中的光纤[10]。 该光纤在1530-1565nm波长范围内具有绝对幅度至少为0.8ps /（nm-km）的色散，并具有小于0.05ps /（nm2-km）的色散斜率。 该光纤表现出小于约0.20dB / km的损耗，并且对弯曲相对不敏感; 而且，其有效面积超过50μm2。 光纤包括具有最大折射率n1的透明材料芯和在所述芯的外表面上具有折射率n2的透明包层材料层。 芯包括其最小折射率n3相对于n2被压下的透明材料的环形区域。 这些指标受以下等式的限制：0.50 <（n1-n2）/ n2 <0.70; 和-0.30 <（n3-n2）/ n2 <-0.05。 示出了对于正色散和负色散应用均具有低色散斜率的光纤。

公开(公告)号：EP1255138B1

公开(公告)日：2003-08-06

申请号：EP01309523.7

申请日：2001-11-12

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Hsu, Lucas ,  Peckham, David W. ,  Reed, William A. ,  Yan, Man Fei

IPC: G02B6/22 ,  G02B6/16

CPC classification number: G02B6/0365 ,  G02B6/02019 ,  G02B6/02242 ,  G02B6/03627 ,  G02B6/03644