| Patent Number |
Title Of Patent |
Date Issued |
| 7526201 |
Optical fiber transmission system with noise loading |
April 28, 2009 |
| A system and method for loading unutilized channels of a WDM system with noise to improve system performance. A transmitter amplifier may impart noise to unutilized channels by reducing amplifier input or providing feedback of the amplifier output. Noise signals may also be looped back |
| 7519295 |
Apparatus and method for commissioning an optical transmission system |
April 14, 2009 |
| An apparatus and method directed to testing and optimizing performance of an optical transmission system is disclosed, including at least one broadband dispersion compensation unit (DCU) or at least one depolarization device. The depolarization device may be used alone or in combinat |
| 7440168 |
Managing gain tilt in an optically amplified transmission system |
October 21, 2008 |
| An optical transmission system may include a combination of higher gain repeaters and lower gain repeaters, arranged to manage gain tilt. The higher gain repeaters and lower gain repeaters may be arranged to allow net gain to vary (e.g., above and below zero) within a predetermined a |
| 7426323 |
Dispersion management in branched optical networks |
September 16, 2008 |
| Dispersion may be managed in a branched optical network by using transmission segments having a single period segment dispersion map. One or more of such segments may be coupled to network nodes such as terminals or branching units such that dispersion may be managed even when the ne |
| 7388657 |
System and method for monitoring an optical communication system |
June 17, 2008 |
| A monitoring system and method may be used to monitor an optical communication system. A monitoring system and method may be used to derive loop gain data sets from optical time domain reflectometry (OTDR) or coherent optical time domain reflectometry (COTDR) data. A monitoring syste |
| 6567577 |
Method and apparatus for providing chromatic dispersion compensation in a wavelength division mu |
May 20, 2003 |
| A WDM optical communication system is provided that includes a transmitter and a receiver. An optical fiber transmission path couples the transmitter to the receiver. The transmission path includes at least one repeater having an optical amplifier located therein. A dispersion compensato |
