Optical receiver with an equalizing circuit for PMD-induced interference, and system with such an optical receiver
First Claim
Patent Images
1. An optical receiver comprising:
- a splitting facility (1.1, 5.7, 6.4) for splitting a routable optical signal (S) into two electrical signal components (S-, S+), where the first electrical signal component (S-) exits from a first output (1.16), and the second electrical signal component (S+) exits from a second output (1.17) of the splitting facility (1.1, 5.7, 6.4),an equalizing circuit (1.2, 4.9), responsive to the electrical signal components (S-, S+) for processing the electrical signal components (S-, S+) and for providing a derived data signal (D) via an output (1.10) of the equalizing circuit and for providing a quality signal at an output (1.15) of the equalizing circuit, anda control facility (1.3, 5.3), responsive to the quality signal for controlling the splitting facility (1.1).
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Abstract
An optical receiver is presented, which can receive and evaluate an optical signal (S) containing interference caused by polarization mode dispersion (PMD). The optical receiver has a splitting facility (1.1) which splits the routable optical signal (S) into two electrical signal components (S-, S+). The electrical signal components (S-, S+) are processed in an equalizing circuit (1.2). A control facility (1.3) controls the splitting facility (1.1) with the aid of a quality signal (Q) produced by the equalizing circuit (1.2).
52 Citations
9 Claims
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1. An optical receiver comprising:
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a splitting facility (1.1, 5.7, 6.4) for splitting a routable optical signal (S) into two electrical signal components (S-, S+), where the first electrical signal component (S-) exits from a first output (1.16), and the second electrical signal component (S+) exits from a second output (1.17) of the splitting facility (1.1, 5.7, 6.4), an equalizing circuit (1.2, 4.9), responsive to the electrical signal components (S-, S+) for processing the electrical signal components (S-, S+) and for providing a derived data signal (D) via an output (1.10) of the equalizing circuit and for providing a quality signal at an output (1.15) of the equalizing circuit, and a control facility (1.3, 5.3), responsive to the quality signal for controlling the splitting facility (1.1). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for transmitting an optical signal (S) via an optical fiber network, with an optical transmitter at the transmitting end of the system, and with an optical receiver at the receiving end, characterized in that the optical receiver has a splitting facility (1.1, 5.7, 6.4) which splits the routable optical signal (S) into two electrical signal components (S-, S+), wherein the splitting facility is responsive to control signals and wherein the first electrical signal component (S-) exits from a first output (1.16), and the second electrical signal component (S+) exits from a second output (1.17) of the splitting facility (1.1, 5.7, 6.4) for providing the electrical signal components (S-, S+) to an equalizing circuit (1.2, 4.9) for processing the electrical signal components (S-, S+) and for providing a data signal, and in that the optical receiver has a control facility (1.3, 5.3) responsive to a quality signal from the equalizing circuit for providing said control signals.
Specification