Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method and apparatus for extending fiber transmission distance with multiple pre-emphases in optically amplified DWDM system

Method and apparatus for extending fiber transmission distance with multiple pre-emphases in optically amplified DWDM system

US Patent 6456409 · Granted Sep 24, 2002

Estimated economic value: $4,970,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Maximum a posteriori detector for linear and nonlinear channel impairment2025
Integrated silicon photonics transceivers enabling ultra-high-speed high dense i2025
Device-to-device wireless communication2025
Method and apparatus for linear frequency modulation of large dynamic range with2025
Traveling waveguide in Mach-Zehnder modulator to facilitate phase match and impe2025
Co-packaging photonic integrated circuits and application specific integrated ci2024
Beam scanning with tunable lasers2024
Method and apparatus for bias control with a large dynamic range for Mach-Zehnde2024
Optical instrument for imaging and sensing using multicore fiber2023
Integrated photonic chip with coherent receiver and variable optical delay for i2023
Few-mode optical fiber measurement instrument2023
Method and apparatus for phase-matched optical and RF wave propagations for semi2023