Wavelength-division multiplexed optical transmission system
a transmission system and wavelength channel technology, applied in wavelength-division multiplex systems, multiplex communication, baseband system details, etc., can solve the problems of serious deterioration in transmission, no guarantee of data correlativity among a plurality of wavelength channels, and deterioration of transmitting characteristics, so as to suppress the occurrence of abnormally large xpm and xgm. , the effect of reducing the correlativity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
Problems solved by technology
Method used
Image
Examples
first embodiment
[0054] The next description turns to embodiments of the present invention with reference to the drawings. FIG. 1 is a block diagram showing a construction on a transmission side in a wavelength-division multiplexed optical transmission system according to the present invention, and corresponds to the construction on a transmitting side in an optical transmission system including a transmitter Tx100 and a receiver Rx200, which is connected via an optical transmitting line 300 made up of an optical fiber shown in FIG. 17.
[0055] Referring to FIG. 1, the transmitting side in the wavelength-division multiplexed optical transmission system according to the first embodiment of the present invention comprises an inter-station transmitting device 1 and intra-station devices 2-1 to 2-3. It is noted to schematically indicate a portion wherein optical signals outputted from the intra-station devices 2-1 to 2-3 are wavelength-multiplexed and transmitted to an optical fiber transmitting line (not...
third embodiment
[0100] According to the present invention, if changing the scrambling pattern, only execute the scrambling process by employing the scrambling data generating unit 71 in the scrambling circuit 7.
[0101] Accordingly, in proportion to the definite function, it is able to simplify the signal processing circuit and reduce costs. When configuring the frame for error correcting code herein, the third embodiment of the present invention can be embodied by adding the frame configuration to the processing circuit, and also can suppress the increase in the number of parts. The scrambling circuit 7 can be used for the inter-station transmitting device 1, etc., as shown in FIG. 1.
[0102] In order to descramble the data on a receiving side (not shown), the scrambling pattern used on the transmitting side must be known. Mainly, there are two methods of communicating the scrambling pattern. According to one communicating method, by embedding information indicative of a pattern kind of non-scrambled...
fourth embodiment
[0122]FIG. 10 is a diagram for illustrating a dummy data pattern control method according to the present invention. Referring to FIG. 10, the present embodiment is one example obtained by applying the present dummy data pattern control method to a switch for switching the dummy data pattern to the dummy data patterns included in frame configuration circuits 41-1 to 41-3 in a transmitter for transmitting optical signals which are wavelength-multiplexed to the same fiber.
[0123] That is, the present embodiment comprises: the frame configuration circuits (switches for switching data to the dummy data pattern) 4-1-1 to 41-3; E / Os 42-1 to 42-3; a dummy data pattern controller 43; and an optical multiplexer 44.
[0124] The dummy data pattern controller 43 receives managing information such as the number of wavelength, wavelength separation between channels, transmitting line dispersion value of the optical signal which is wavelength-multiplexed to the same fiber, calculates the dummy data p...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com