Abstract

We developed an InP-based coherent driver modulator (CDM) with a flexible printed circuit (FPC) RF interface. The CDM has a 3-dB electro-optic (EO) bandwidth of over 85 GHz, including the evaluation board loss, which is sufficient for 1-Tb/s/λ-class operation. Furthermore, we obtained good back-to-back bit-error-rate (BER) performance in modulations up to 144-Gbaud dual-polarization 16-QAM, and we confirmed the CDM's capability for operation over the 150-Gbaud class. With the FPC RF interface, a package's roll-off frequency above 100 GHz was demonstrated in both measured and simulated results. The CDM includes an InP-based n-i-p-n heterostructure modulator chip with a differential capacitively loaded traveling-wave electrode (CL-TWE) and a 4-channel linear SiGe BiCMOS driver IC with an open-collector configuration and low wire inductance. The modulator chip has an EO 3-dB bandwidth of over 70 GHz, which is an improvement of about 30 GHz over that of a conventional p-i-n structure. In addition, to facilitate future 200-Gbaud-class operation, a simulation with a reduced GND via diameter confirmed that the package's roll-off frequency can be improved to more than 120 GHz. Moreover, by reducing the CL-TWE period and the metal's DC resistance, the n-i-p-n modulator chip achieve an EO 3-dB bandwidth of 90 GHz or more.

Coherent Nyquist optical pulse transmission at nearly 1-Tb/s/λ over 1,600 km with a capacity of 21.5 Tb/s using PS-32 QAM signals

Shohei Beppu, Aoto Ishikawa, Takeki Serikawa, Masato Yoshida, Toshihiko Hirooka, and Masataka Nakazawa
Opt. Express 32(9) 16533-16547 (2024)

10 Gb/s InP-based Mach-Zehnder modulator for operation at 2 μm wavelengths

M. U. Sadiq, M. R. Gleeson, N. Ye, J. O’Callaghan, P. Morrissey, H. Y. Zhang, K. Thomas, A. Gocalinska, E. Pelucchi, F. C. G. Gunning, B. Roycroft, F. H. Peters, and B. Corbett
Opt. Express 23(9) 10905-10913 (2015)

120-GBaud 16-QAM silicon photonics IQ modulator for data center interconnection

Jian Wang, Mustafa Al-Qadi, Wen-Jr Jiang, Kangmei Li, You-Wei Chen, Konstantin Kuzmin, Calvin Ho, Yan Yang Zhao, Hiroaki Yamada, Jason Ackert, David Dougherty, Weilin Liu, Chengkun Chen, Yifeng Zhou, Ping Wang, Xu Liu, Kevin Schmidt, Jocelyn Nee, Kenneth A. McGreer, Marcel Boudreau, Jibin Sun, Winston I. Way, and Hui Xu
Opt. Express 31(16) 25515-25526 (2023)

Single-carrier 1-Tb/s PDM-16QAM transmission using high-speed InP MUX-DACs and an integrated OTDM modulator

Hiroshi Yamazaki, Akihide Sano, Munehiko Nagatani, and Yutaka Miyamoto
Opt. Express 23(10) 12866-12873 (2015)

1.12 Tb/s superchannel coherent PM-QPSK InP transmitter photonic integrated circuit (PIC)

P. Evans, M. Fisher, R. Malendevich, A. James, G. Goldfarb, T. Vallaitis, M. Kato, P. Samra, S. Corzine, E. Strzelecka, P. Studenkov, R. Salvatore, F. Sedgwick, M. Kuntz, V. Lal, D. Lambert, A. Dentai, D. Pavinski, J. Zhang, J. Cornelius, T. Tsai, B. Behnia, J. Bostak, V. Dominic, A. Nilsson, B. Taylor, J. Rahn, S. Sanders, H. Sun, K.-T. Wu, et al.
Opt. Express 19(26) B154-B158 (2011)