Issued Patents All Time
Showing 25 most recent of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8958704 | Generation of a feedback signal for a polarization mode dispersion compensator in a communication system using alternate-polarization | Axel Klekamp | 2015-02-17 |
| 8855504 | Optical transmission method and optical receiver | — | 2014-10-07 |
| 7546040 | Fiber optical system for PMD mitigation by polarization scrambling | — | 2009-06-09 |
| 7486898 | Receiver for PMD mitigation by polarization scrambling | — | 2009-02-03 |
| 7295774 | Performance monitoring for optical links | — | 2007-11-13 |
| 7289739 | Polarization mode dispersion controller device and method for its operation | Fred Buchali | 2007-10-30 |
| 7257290 | Multi-wavelength CD and PMD compensator | — | 2007-08-14 |
| 7224900 | Actively stabilized time multiplexer | — | 2007-05-29 |
| 6987804 | Process for recovering digital optical signals and a feedback decision circuit | Fred Buchali | 2006-01-17 |
| 6842547 | Adaptive chromatic dispersion compensator | — | 2005-01-11 |
| 6816635 | Optical waveguide phase shifter | Axel Klekamp | 2004-11-09 |
| 6795596 | Variable optical delay line and use of the variable optical delay line | — | 2004-09-21 |
| 6735351 | Fast-adapting PMD compensator | — | 2004-05-11 |
| 6271922 | Transmission system and associated method for measuring interference effects of glass fiber transmission links | Harald Schmuck | 2001-08-07 |
| 6256342 | Method and regenerative filter for equalizing digitally transmitted signals | Erwin Robert Schlag | 2001-07-03 |
| 6256130 | Method for optical transmission over a fiber optic network, and optical communication network | — | 2001-07-03 |
| 6016379 | Method and facility for equalizing an electric signal distorted due to interference in the optical domain | — | 2000-01-18 |
| 5903384 | Wavelength converter suitable for high bit rates | — | 1999-05-11 |
| 5793511 | Optical receiver with an equalizing circuit for PMD-induced interference, and system with such an optical receiver | — | 1998-08-11 |
| 5774246 | Apparatus for demultiplexing an optical digital signal | — | 1998-06-30 |
| 5557694 | Method of determining the zero dispersion wavelength of an optical waveguide | Gustav Veith | 1996-09-17 |
| 5550667 | Optical transmitter | Heinz Krimmel, Rolf Heidemann, Jurgen Otterbach | 1996-08-27 |
| 5504610 | Optical mixer and its use | — | 1996-04-02 |
| 5483373 | Optical transmitter for the common transmission of analog signals and digital qam signals | Heinz Krimmel | 1996-01-09 |
| 5453872 | Fiber-optic amplifier as wavelength converter | Rolf Heidemann, Thomas Pfeiffer | 1995-09-26 |