公开(公告)号：US20200076526A1

公开(公告)日：2020-03-05

申请号：US16118882

申请日：2018-08-31

Applicant: Nokia Solutions and Networks Oy

Inventor： Peter Winzer ,  Junho Cho ,  Andrew Chraplyvy

IPC: H04J14/02 ,  H04B10/564 ,  G02B5/20 ,  H04B10/69

Abstract: A system comprising an optical receiver for multi-wavelength-channel optical communication, an optical source of spontaneous emission light and a tunable optical filter connected to receive the light at an input. The tunable optical filter can have a filter spectrum with spectral passbands separated by spectral notches. The system also includes an optical fiber link connecting an output of the optical filter to the optical receiver for multi-wavelength-channel optical communication. The receiver can be configured to make a measurement indicative of an optical power level in at least one of the notches or to make measurements of optical power levels and at least one of the passbands and at least one of the notches in response to the optical source transmitting the filtered light to the optical fiber link. Another embodiment includes an apparatus comprising an optical test module including a source of spontaneous emission light and an optical filter connected to receive the spontaneous emission light from the source.

公开(公告)号：US11362755B2

公开(公告)日：2022-06-14

申请号：US16118882

申请日：2018-08-31

Applicant: Nokia Solutions and Networks Oy

Inventor： Peter Winzer ,  Junho Cho ,  Andrew Chraplyvy

IPC: H04B10/08 ,  H04J14/02 ,  H04B10/564 ,  H04B10/69 ,  G02B5/20

Abstract: A system comprising an optical receiver for multi-wavelength-channel optical communication, an optical source of spontaneous emission light and a tunable optical filter connected to receive the light at an input. The tunable optical filter can have a filter spectrum with spectral passbands separated by spectral notches. The system also includes an optical fiber link connecting an output of the optical filter to the optical receiver for multi-wavelength-channel optical communication. The receiver can be configured to make a measurement indicative of an optical power level in at least one of the notches or to make measurements of optical power levels and at least one of the passbands and at least one of the notches in response to the optical source transmitting the filtered light to the optical fiber link. Another embodiment includes an apparatus comprising an optical test module including a source of spontaneous emission light and an optical filter connected to receive the spontaneous emission light from the source.