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1. (WO2018052345) OPTICAL TRANSCEIVER AND METHOD OF CONTROLLING OPTICAL POWERS OF OPTICAL CHANNELS

Pub. No.:    WO/2018/052345    International Application No.:    PCT/SE2016/050853
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Wed Sep 14 01:59:59 CEST 2016
IPC: H04J 14/02
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventors: HUANG, Wei-Ping
TESTA, Francesco
VALL-LLOSERA, Gemma
Title: OPTICAL TRANSCEIVER AND METHOD OF CONTROLLING OPTICAL POWERS OF OPTICAL CHANNELS
Abstract:
An optical transceiver (70) comprising: an optical waveguide (12); a first and second add-drop ports (72, 74); an optical transmitter (80) coupled to a reconfigurable optical channel-add apparatus (84) comprising a first add path (86), a second add path (90), an add micro-ring resonator (100) and first and second optical attenuators (88, 92), reconfigurable to selectively block an optical channel from the optical transmitter in one of the first add path and the second add path, and wherein the add micro-ring resonator is reconfigurable selectively to add an optical channel from the first add path to the optical waveguide to travel towards the first add-drop port or to add an optical channel from the second add path to the optical waveguide to travel towards the second add-drop port; and an optical receiver (110) coupled to a reconfigurable optical channel-drop apparatus (112) comprising a drop micro-ring resonator (130), a first drop path (114), and a second drop path (118), wherein the drop micro-ring resonator is reconfigurable selectively to drop an optical channel travelling from the first add-drop port from the optical waveguide to the first drop path or to drop an optical channel travelling from the second add-drop port from the optical waveguide to the second drop path.