TY - GEN
T1 - Vector modulation technologies for high-speed optical transmission
AU - Kawanishi, Tetsuya
AU - Sakamoto, Takahide
AU - Chiba, Akito
AU - Kanno, Atsushi
PY - 2010/10/6
Y1 - 2010/10/6
N2 - We present lightwave modulation techniques for high-speed signal generation in digital and analogue applications. Advanced modulation formats, such as differential quadrature phase-shift-keying, amplitude- and phase-shift-keying, quadrature-amplitude-modulation etc, were investigated to obtain enhanced spectral efficiency, where Mach-Zehnder modulators (MZMs) are commonly used to control optical amplitude or phase in lightwave signals. In this presentation, we describe lightwave modulation techniques for high-speed signal generation based on integrated MZMs. By using quad-parallel MZM, high-speed optical 16-QAM signals can be synthesized, where the baud rate and bit rate were 12.5 Gbaud and 50 Gb/s. Impact of extinction-ratio (ER) of MZMs on advanced modulation formats is also discussed. Imbalance in the MZMs due to fabrication error can be compensated by using a dual-parallel MZM. ER can be higher than 70 dB.
AB - We present lightwave modulation techniques for high-speed signal generation in digital and analogue applications. Advanced modulation formats, such as differential quadrature phase-shift-keying, amplitude- and phase-shift-keying, quadrature-amplitude-modulation etc, were investigated to obtain enhanced spectral efficiency, where Mach-Zehnder modulators (MZMs) are commonly used to control optical amplitude or phase in lightwave signals. In this presentation, we describe lightwave modulation techniques for high-speed signal generation based on integrated MZMs. By using quad-parallel MZM, high-speed optical 16-QAM signals can be synthesized, where the baud rate and bit rate were 12.5 Gbaud and 50 Gb/s. Impact of extinction-ratio (ER) of MZMs on advanced modulation formats is also discussed. Imbalance in the MZMs due to fabrication error can be compensated by using a dual-parallel MZM. ER can be higher than 70 dB.
KW - High-speed transmission
KW - Modulation
KW - Waveguide device
UR - http://www.scopus.com/inward/record.url?scp=77957272044&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77957272044&partnerID=8YFLogxK
U2 - 10.1109/ICTON.2010.5549077
DO - 10.1109/ICTON.2010.5549077
M3 - Conference contribution
AN - SCOPUS:77957272044
SN - 9781424477975
T3 - 2010 12th International Conference on Transparent Optical Networks, ICTON 2010
BT - 2010 12th International Conference on Transparent Optical Networks, ICTON 2010
T2 - 2010 12th International Conference on Transparent Optical Networks, ICTON 2010
Y2 - 27 June 2010 through 1 July 2010
ER -