Tyco Submarine Systems Ltd.
38Patents
0Active
38Granted
36Portfolio score
Filing activity: Dec 29, 1995 → Apr 2, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6134033A | Method and apparatus for improving spectral efficiency in wavelength division multiplexed transmission systems | Electricity | 196 | Expired |
| US6137604A | Chromatic dispersion compensation in wavelength division multiplexed optical transmission systems | Electricity | 102 | Expired |
| US6151160A | Broadband Raman pre-amplifier for wavelength division multiplexed optical communication systems | Electricity | 97 | Expired |
| US6081366A | Optical fiber communication system with a distributed Raman amplifier and a remotely pumped er-doped fiber amplifier | Electricity | 94 | Expired |
| US5966206A | Interlocked high power fiber system using OTDR | Electricity | 44 | Expired |
| US6052219A | Wide bandwidth Raman amplifier capable of employing pump energy spectrally overlapping the signal | Electricity | 42 | Expired |
| US5946119A | Wavelength division multiplexed system employing optimal channel modulation | Electricity | 40 | Expired |
| US6134032A | Method and apparatus for automatically identifying system faults in an optical communications system from repeater loop gain signatures | Electricity | 39 | Expired |
| US6122298A | Multi-wavelength optical pump | Electricity | 36 | Expired |
| US6061373A | Safety interlocking system for an optical fiber amplifier and pump source | Electricity | 31 | Expired |
| US5969806A | Chromatic dispersion measurement in a fiber optic cable | Physics | 31 | Expired |
| US6038356A | Lightwave transmission system employing raman and rare-earth doped fiber amplification | Electricity | 30 | Expired |
| US5982971A | Floating fiber storage assembly | Physics | 28 | Expired |
| US5991069A | Split-pumped dual stage optical fiber amplifier | Electricity | 27 | Expired |
| US6310709A | Synchronous polarization and phase modulation using a periodic waveform with complex harmonics for improved performance of optical transmission systems | Electricity | 25 | Expired |
| US5912755A | Synchronous polarization and phase modulation for improved performance of optical transmission systems | Electricity | 24 | Expired |
| US5969833A | Monitoring system using an optical side tone as a test signal | Electricity | 23 | Expired |
| US5912761A | Apparatus and method for controlling shared optical pump power sources | Electricity | 22 | Expired |
| US5764405A | Lossless optical transmission system architecture with non-failing optical amplifiers | Electricity | 22 | Expired |
| US5926263A | Side-tone OTDR for in-service optical cable monitoring | Electricity | 21 | Expired |
| US6057950A | Synchronous polarization and phase modulation for improved performance of optical transmission systems | Electricity | 19 | Expired |
| US6188823A | Method and apparatus for providing dispersion and dispersion slope compensation in an optical communication system | Electricity | 18 | Expired |
| US6152611A | Method and apparatus for providing a flexible splint splice | Physics | 18 | Expired |
| US6028684A | Path to provide OTDR measurements of an optical transmission system that includes optical isolators | Physics | 17 | Expired |
| US6025949A | Line monitoring of an optical transmission system using pilot signals | Electricity | 15 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.