Title :
Wide-range, Accurate and Simple Digital Frequency Offset Compensator for Optical Coherent Receivers
Author :
Lei Li ; Zhenning Tao ; Oda, Shoichiro ; Hoshida, Takeshi ; Rasmussen, Jens C.
Author_Institution :
Fujitsu R&D Center, Beijing, China
Abstract :
We present a digital frequency offset compensator for optical coherent QPSK receivers. The compensation accuracy reaches ± 30 MHz while the range covers ± 5 GHz. This would realize coherent receivers with common off-the-shelf tunable lasers.
Keywords :
laser tuning; optical receivers; quadrature phase shift keying; QPSK receivers; digital frequency offset compensator; optical coherent receivers; tunable lasers; Feedforward systems; Frequency estimation; Laser noise; Optical modulation; Optical receivers; Optical signal processing; Optical transmitters; Phase detection; Phase estimation; Phase noise;
Conference_Titel :
Optical Fiber communication/National Fiber Optic Engineers Conference, 2008. OFC/NFOEC 2008. Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-55752-856-8
DOI :
10.1109/OFC.2008.4528776
