TY - GEN
T1 - Novel real time dc bias monitoring technique for single polarisation quad-drive IQ modulator
AU - Canas-Estrada, N.
AU - Garcia Gunning, F. C.
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/7
Y1 - 2019/7
N2 - Nested Mach-Zehnder modulators, such as DQPSK, DP-mQAm etc., are used in coherent optical communication systems to perform electrical-to-optical data up-conversion and to enable higher order modulation formats in the optical domain. However, their reliability can be affected by drifts in the transfer function, for example due to ambient temperature changes. Maintaining optimum bias voltages (e.g. at quadrature) is a requirement to ensure best performance. We propose a potentially low cost real-time monitoring solution of the biases in nested MZMs using low frequency analogue electronics. This monitoring signal can be used to create an automatic bias control.
AB - Nested Mach-Zehnder modulators, such as DQPSK, DP-mQAm etc., are used in coherent optical communication systems to perform electrical-to-optical data up-conversion and to enable higher order modulation formats in the optical domain. However, their reliability can be affected by drifts in the transfer function, for example due to ambient temperature changes. Maintaining optimum bias voltages (e.g. at quadrature) is a requirement to ensure best performance. We propose a potentially low cost real-time monitoring solution of the biases in nested MZMs using low frequency analogue electronics. This monitoring signal can be used to create an automatic bias control.
KW - Bias monitoring
KW - DC drift
KW - Digital signal processing
KW - Dither bias control
KW - IQ modulation
KW - Optical communications
UR - https://www.scopus.com/pages/publications/85073049999
U2 - 10.1109/ICTON.2019.8840163
DO - 10.1109/ICTON.2019.8840163
M3 - Conference proceeding
AN - SCOPUS:85073049999
T3 - International Conference on Transparent Optical Networks
BT - 21st International Conference on Transparent Optical Networks, ICTON 2019
PB - IEEE Computer Society
T2 - 21st International Conference on Transparent Optical Networks, ICTON 2019
Y2 - 9 July 2019 through 13 July 2019
ER -