Analog optical transmission system
US7110648B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2005 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Aug 25, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/25253
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an analog optical transmission system having a construction for expanding an analog transmittable distance. The analog optical transmission system includes: a light transmitter outputting analog optical signals such as image signals modulated in accordance with electrical signals multiplexed on a frequency domain; a transmission line including a SMF of 20 km or less in the total length; and a light receiver. A dispersion compensating fiber compensating for the chromatic dispersion of the transmission line is arranged on the transmission line, and the dispersion compensating fiber satisfies one of the first condition that the chromatic dispersion is set at −250 ps/nm/km or less and a length is set at 1.1 km or less, and the condition that the chromatic dispersion is set at −330 ps/nm/km or less and a length is set at 1.2 km or less. Optical suppressing devices reducing the MPI noise are arranged at the end portion of the dispersion compensating fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.