Patent ID: 9356694
Filing Date: 2016-05-31
CPC Classification: H04B

Claim Text:
1. A method at an optical transmitting arrangement comprising a tunable laser transmitter for controlling a mode change of the tunable laser transmitter executed during transmission of data to an optical receiving arrangement, the method comprising: monitoring a state of the tunable laser transmitter and a state of the data transmission; selecting, on the basis of the monitored state of the tunable laser transmitter and the state of the data transmission, a time instance for initiating the mode change; starting buffering user data of the data transmission, interrupting the data transmission and initiating the mode change at the selected time instance; buffering user data of the data transmission during the mode change; notifying, upon initiating the mode change, the optical receiving arrangement of said mode change, said interrupting of the data transmission, and said buffering of user data of the data transmission for a duration of said mode change with an indication; and resuming the interrupted data transmission upon determining that the tunable laser transmitter has reached a stable state.