(19)
(11) EP 4 533 701 A1

(12)

(43) Date of publication:
09.04.2025 Bulletin 2025/15

(21) Application number: 23731971.0

(22) Date of filing: 01.06.2023
(51) International Patent Classification (IPC): 
H04J 14/02(2006.01)
 H04B 10/297(2013.01)
(52) Cooperative Patent Classification (CPC):
H04J 14/0212; H04B 10/297
(86) International application number:
PCT/EP2023/064724
(87) International publication number:
WO 2023/232960 (07.12.2023 Gazette 2023/49)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 02.06.2022 US 202263348073 P

(71) Applicant: Telefonaktiebolaget LM Ericsson (publ)
164 83 Stockholm (SE)

(72) Inventors:
  • GIORGI, Luca
    56100 Pisa (IT)
  • IOVANNA, Paola
    56100 Pisa (IT)
  • PALAGI, Alfredo
    16152 Genova (IT)

(74) Representative: Ericsson 
Patent Development Torshamnsgatan 21-23
164 80 Stockholm
164 80 Stockholm (SE)

   


(54) PROGRAMMABLE OPTICAL ADD-DROP MULTIPLEXER FOR COMMUNICATION NETWORK HAVING A BI-DIRECTIONAL OPTICAL FILTER