Higher-order QAM data transmission using a high-coherence hybrid Si/III–V semiconductor laser
Abstract
We experimentally demonstrate the use of a high-coherence hybrid silicon (Si)/III–V semiconductor laser as the light source for a transmitter generating 20 Gbaud 16- and 64- quadrature amplitude modulated (QAM) data signals over an 80 km single-mode fiber (SMF) link. The hybrid Si/III–V laser has a measured Schawlow–Townes linewidth of ∼ 10 k H z , which is achieved by storing modal optical energy in low-loss Si, rather than the relatively lossy III–V materials. We measure a received bit error rate (BER) of 4.1 × 10 − 3 when transmitting the 64-QAM data over an 80 km SMF using the hybrid Si/III–V laser. Furthermore, we measure a BER of 1 × 10 − 4 with the Viterbi–Viterbi digital carrier phase recovery method when transmitting the 16-QAM data over an 80 km SMF using the hybrid Si/III–V laser. This performance is achieved at power penalties lower than those obtained with an exemplary distributed feedback laser and slightly higher than those with an exemplary narrow-linewidth external cavity laser.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 11, 2020
- Source ID
- 10.1364/ol.383137
Entities
People
- Ahmad Fallahpour
- Ahmed Almaiman
- Alan E. Willner
- Amnon Yariv
- Fatemeh Alishahi
- George Rakuljic
- Huolei Wang
- Kaiheng Zou
- Moshe Tur
- Naresh Satyan
- Peicheng Liao
- Yinwen Cao
- Zhewei Zhang
Organizations
- Army Research Office
- Defense Advanced Research Projects Agency
- National Science Foundation