Arrangement for compensating raman scattering
AssigneeSiemens Aktiengesellschaft
InventorLutz Rapp
Life of this patent
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Abstract
A light beam which is used for transmitting a wavelength division multiplex signal is guided to a Bragg grating via an adjustable mirror. According to the angle of incidence of the light beam relative to the longitudinal axis of the Bragg grating, different transmission characteristic curves having different gradients are produced. As a result thereof, scattering of the wavelength division multiplex signal can be compensated. A second controllable mirror enables the damping to be adjusted. A control device effects a rapid correction of the scattering after data signals are connected or disconnected.
Claims6
1-5. (canceled)
An apparatus for compensating the scattering of a wavelength division multiplex (WDM) signal comprising:
- a Bragg filter;
- and
- a mirror that changes the angle of incidence of a light beam transmitting the WDM signal relative to the longitudinal axis of the Bragg filter, to effect a wavelength-dependent damping with variable gradient in the transmission range.
Dependencies are inferred from the claim text.