公开(公告)号：WO0239625A9

公开(公告)日：2002-12-05

申请号：PCT/US0132170

申请日：2001-10-15

Applicant: CORNING INC

Inventor： CONRADI JAN ,  ROUDAS IOANNIS ,  TOMKOS IOANNIS ,  VODHANEL RICHARD S

IPC: H04B10/2513 ,  H04B10/18

CPC classification number: H04B10/25137

Abstract: Disclosed is a telecommunication system in which laser chirp is compensated by using optical waveguide fiber having a pre-selected sign of total dispersion. The combination of a laser with an optical waveguide fiber is optimized by selecting transient chirp dominated lasers for use with optical waveguide fibers having sign of end to end dispersion opposite in sign to the transient dominated laser chirp and by selecting adiabatic chirp dominated lasers for use with optical waveguide fibers having sign of end to end dispersion of the same sign as the adiabatic dominated laser chirp.

Abstract translation: 公开了一种电信系统，其中通过使用具有预选择的总色散符号的光纤光纤来补偿激光啁啾。 激光与光波导光纤的组合通过选择瞬态啁啾控制激光器进行优化，该激光器与具有与瞬时主导激光啁啾符号相反的端对端色散符号的光波导纤维和通过选择绝热啁啾主导激光器一起使用 具有与绝热主导的激光啁啾相同符号的端对端分散符号的光波导纤维。

公开(公告)号：WO0119003A2

公开(公告)日：2001-03-15

申请号：PCT/US0023314

申请日：2000-08-24

Applicant: CORNING INC

Inventor： CONRADI JAN ,  IOANNIS ROUDAS ,  SHARMA MANISH

IPC: H04B10/2513 ,  H04J

CPC classification number: H04B10/25137 ,  H04B2210/254

Abstract: Disclosed is a telecommunications link having positively chirped optical signal pulses propagating in an optical waveguide fiber, at least a portion of which is characterized by a negative chromatic dispersion. An embodiment of the invention is a semiconductor laser source in combination with negative dispersion optical waveguide fiber. The source of the chirped signal pulses is selected to have predominantly adiabatic chirp as evidenced, in the case of a DFB laser, by a gain compression factor in the range of 4 x 10 m to 30 x 10 m . Eye closure penalty and bit error rate are maintained low for link lengths having cumulative dispersion parameter times distance product of the order of thousands of ps/nm. Optimum laser extinction ratio is found to be in the range of 5 to 10 dB, although extinction ratios as high as 20 dB are contemplated.

Abstract translation: 公开了一种电信链路，其具有在光波导光纤中传播的正向啁啾光信号脉冲，其至少一部分的特征在于负色散。 本发明的实施例是与负色散光波导光纤组合的半导体激光源。 啁啾信号脉冲的源选择为主要是绝热的啁啾，如在DFB激光器的情况下所证明的，增益压缩因子在4×10 -3 m 3至30×10 5的范围内， -23>米<3>。 对于具有累积色散参数乘以距离乘积数千ps / nm的链路长度，闭眼罚分和比特错误率保持较低。 发现最佳激光消光比在5至10dB的范围内，尽管可以考虑高达20dB的消光比。

公开(公告)号：EP1236279A4

公开(公告)日：2003-02-12

申请号：EP00970702

申请日：2000-10-10

Applicant: CORNING INC

Inventor： CONRADI JAN ,  SHARMA MANISH

IPC: H03L7/07 ,  H04L7/027 ,  H04L7/033 ,  H03L7/087 ,  H04J3/06 ,  H04J3/16

CPC classification number: H03L7/07 ,  H04L7/027 ,  H04L7/0337

Abstract: A flexible bit rate clock recovery unit (30) is provided for recovering a clock signal from an input data signal, where the input data signal is transmissible at different bit rates. The flexible bit rate clock recovery unit includes a plurality of fixed rate clock recovery units (32), where each fixed rate clock recovery units is operative at a different rate to extract an intermediary clock signal from the input data signal; a comparator (34) for generating an encoded data signal based on an amplitude characteristic of each of the intermediary clock signals, where the encoded data signal is indicative of the clock signal associated with the input data signal; and a selector (36) for selecting one of the intermediary clock signals based on the encoded data signal, thereby recovering the clock signal from the input data signal.

公开(公告)号：EP1210623A4

公开(公告)日：2003-01-02

申请号：EP00975179

申请日：2000-07-28

Applicant: CORNING INC

Inventor： CONRADI JAN ,  KUMAR SHIVA ,  ROSENBLUM STEVEN S

IPC: G02B6/028 ,  G02B6/036 ,  G02B6/34 ,  G02B6/16 ,  G02B6/22 ,  G02B6/293 ,  H04B10/18

CPC classification number: G02B6/03644 ,  G02B6/02009 ,  G02B6/02014 ,  G02B6/02252 ,  G02B6/02257 ,  G02B6/02261 ,  G02B6/0228 ,  G02B6/0286 ,  G02B6/03611 ,  G02B6/03633 ,  G02B6/03688 ,  G02B6/29377

Abstract: A negative total dispersion waveguide fiber having low attenuation and compresses the launched signal pulse when the laser is positively chirped. The laser is provided at optimum bias, which results in positive chirp, but no dispersion penalty is incurred in the link. The waveguide fiber is used a dispersion compensating fiber in a high performance multiplexed telecommunications link. Curve (96) in figure 8 representative of a link comprising fiber having negative dispersion waveguide fibers. Curve (98) is representative of a link comprising fiber having negative dispersion at 1550 nm in accordance with the invention. Curve (100) is representative of a link comprising fiber in accordance with the invention and a laser source that is even more positively chirped thanthe laser to generate curve (98).