Optical fiber amplifier having a gain flattening filter
Номер патента: SE9801160D0
Опубликовано: 01-04-1998
Автор(ы): Dirk Lutz, Nils Peter Blixt
Принадлежит: Ericsson Telefon Ab L M
Опубликовано: 01-04-1998
Автор(ы): Dirk Lutz, Nils Peter Blixt
Принадлежит: Ericsson Telefon Ab L M
Реферат: An optical fiber amplifier of the erbium type is intended to amplify light signals within a wavelength band, e.g. in the range of 1540-1555 mm. The active optical fiber receives light signals to be amplified and pump light of a first pump wavelength from a pump source. A gain flattening filter is connected in the active optical fiber length. A noise filter is also connected in the active optical fiber, not more closer to the output end of the active fiber the gain flattening filter. The noise filter blocks light waves having wavelengths around the ASE gain peak and the gain filter attenuates wavelengths within the useful signal band in order to produce a flat gain curve. The introduction of the noise filter increases the total amplification of the amplifier.
Optical fiber amplifier having a gain flattening filter
Номер патента: WO1999050978A3. Автор: Dirk Lutz,Peter Blixt. Владелец: Ericsson Telefon Ab L M. Дата публикации: 1999-12-02.