TY - JOUR
T1 - Cycle-slip-less low-complexity phase recovery algorithm for coherent optical receivers
AU - Rozental, Valery Nobl
AU - Kong, Deming
AU - Foo, Benjamin
AU - Corcoran, Bill
AU - Lowery, Arthur James
PY - 2017/9/15
Y1 - 2017/9/15
N2 - We propose and experimentally validate a blind phase recovery algorithm based on tracking low-frequency components of the phase noise, which we call “filtered carrier-phase estimation (F-CPE).” Tracking only the low-frequency components allows F-CPE to reduce the computational complexity by using a frequency-domain equalizer and to simplify the partitioning of a 16 quadrature amplitude modulation (16QAM) constellation. Further, this approach eliminates cycle slips by suppressing the impact of amplified spontaneous emission on phase noise estimation. The experimental results demonstrate cycle-slip-free operation for 15 and 32 GBd 16QAM signals. Additionally, the proposed method showed similar or better sensitivity compared with the blind-phase-search algorithm, near standard forward error correction thresholds of modern wavelength division multiplexing systems.
AB - We propose and experimentally validate a blind phase recovery algorithm based on tracking low-frequency components of the phase noise, which we call “filtered carrier-phase estimation (F-CPE).” Tracking only the low-frequency components allows F-CPE to reduce the computational complexity by using a frequency-domain equalizer and to simplify the partitioning of a 16 quadrature amplitude modulation (16QAM) constellation. Further, this approach eliminates cycle slips by suppressing the impact of amplified spontaneous emission on phase noise estimation. The experimental results demonstrate cycle-slip-free operation for 15 and 32 GBd 16QAM signals. Additionally, the proposed method showed similar or better sensitivity compared with the blind-phase-search algorithm, near standard forward error correction thresholds of modern wavelength division multiplexing systems.
UR - http://www.scopus.com/inward/record.url?scp=85029517836&partnerID=8YFLogxK
U2 - 10.1364/OL.42.003554
DO - 10.1364/OL.42.003554
M3 - Article
AN - SCOPUS:85029517836
SN - 0146-9592
VL - 42
SP - 3554
EP - 3557
JO - Optics Letters
JF - Optics Letters
IS - 18
ER -