Method for estimating bandwidth limiting effects in high frequency transmission communication systems
First Claim
1. A method for estimating a bandwidth limiting penalty of a chain of bandpass optical filters in an optical telecommunication system adapted to carry an optical signal having bit rate not less than 10 Gb/s, and wherein average bandwidth of the filters in the chain is of the same order of magnitude as bandwidth of the optical signal transmitted in the system, the method comprises:
- selecting a worst case filter,performing checking of said system, by testing and/or simulating the system being provided with the selected worst case filter instead of the chain of said bandpass filters, andjudging about the bandwidth limiting penalty of the chain of said bandpass filters based on results of the checking and a predetermined maximal value of bandwidth limiting penalty.
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Abstract
A method for estimating a bandwidth limiting penalty of a chain of bandpass optical filters in an optical telecommunication system. The method is advantageous for systems carrying an optical signal at a bit rate of about 10 Gb/s, wherein average bandwidth of the filters in the chain is of the same order of magnitude as bandwidth of the optical signal. The method comprises selecting a worst case filter, checking the system by testing and/or simulating it as being provided with the selected worst case filter instead of the chain of filters, and then judging about the bandwidth limiting penalty of the chain of filters based on results of the checking.
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Citations
12 Claims
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1. A method for estimating a bandwidth limiting penalty of a chain of bandpass optical filters in an optical telecommunication system adapted to carry an optical signal having bit rate not less than 10 Gb/s, and wherein average bandwidth of the filters in the chain is of the same order of magnitude as bandwidth of the optical signal transmitted in the system, the method comprises:
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selecting a worst case filter, performing checking of said system, by testing and/or simulating the system being provided with the selected worst case filter instead of the chain of said bandpass filters, and judging about the bandwidth limiting penalty of the chain of said bandpass filters based on results of the checking and a predetermined maximal value of bandwidth limiting penalty. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification