Title :
Digital optical phase locked loop for real-time coherent demodulation of multilevel PSK/QAM
Author :
Sakamoto, Takahide ; Lu, Guo-Wei ; Chiba, Akito ; Kawanishi, Tetsuya
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Koganei, Japan
Abstract :
We propose a digital optical phase locked loop (DOPLL) for real-time demodulation of high-speed multilevel PSK/QAM. It was simply implemented using low-speed digital signal processor after electrical sampling to demodulate high-speed BPSK, QPSK and 16QAM.
Keywords :
demodulation; digital phase locked loops; multivalued logic circuits; optical phase locked loops; quadrature amplitude modulation; quadrature phase shift keying; 16 QAM demodulation; BPSK demodulation; QPSK demodulation; digital optical phase locked loop; electrical sampling; high-speed multilevel PSK; low-speed digital signal processor; real-time coherent demodulation; Demodulation; Digital signal processing; High speed optical techniques; Optical feedback; Optical receivers; Optical sensors; Optical signal processing; Phase locked loops; Phase shift keying; Quadrature amplitude modulation;
Conference_Titel :
Optical Fiber Communication (OFC), collocated National Fiber Optic Engineers Conference, 2010 Conference on (OFC/NFOEC)
Conference_Location :
San Diego, CA
Electronic_ISBN :
978-1-55752-884-1
