Open AccessIntegrated optical deserialiser time sampling based SiGe photoreceiver
Author(s) -
Mohammed Shafiqul Hai,
Michel Ménard,
Odile Liboiron-Ladouceur
Publication year - 2015
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.031736
Subject(s) - photodetector , optics , optical power , signal (programming language) , bit error rate , waveguide , materials science , optical communication , optoelectronics , photodiode , pseudorandom binary sequence , time domain , electronic engineering , computer science , physics , telecommunications , engineering , laser , channel (broadcasting) , arithmetic , mathematics , binary number , computer vision , programming language
A novel photoreceiver architecture enabling parallel processing in the electronic domain of a high-speed optical signal is demonstrated. This allows the electronics to operate at significantly lower frequency than the optical signal and hence reduce power consumption and the impact of parasitics. The photoreceiver performs optical time sampling with four integrated SiGe photodetectors connected in series by waveguide delay lines. Four variations of the optical time sampling receiver are designed and demonstrated which differ by the data rate (10 Gb/s and 20 Gb/s) and silicon delay waveguide loss (2.5 dB/cm and 0.2 dB/cm). The bit error rate performance of the photodetectors in the receiver was measured individually and reached a performance below 1 × 10⁻¹⁰ at an input optical power between 4.8 and 6.3 dBm through an off-chip 50 Ω load at the output. After O/E conversion, the electrical signal (one segment of 2¹⁵ - 1 PRBS data) from each of the photodetector is processed without errors at a quarter of the bit rate, leading to an overall more power efficient receiver front-end.