Abstract

In our article to extend a 100 Gbit/s/λ fiber-amplifier-less optical link with a simple and cost-effective transmission system, we have fabricated an O-band wavelength range (1260–1360 nm) SOA assisted extended reach EADFB laser (AXEL) with a 300-μm-long DFB laser and 85-μm-long SOA. The length of the integrated electroabsorption modulator was set to 125 μm to obtain a section with low parasitic capacitance for high speed operation. The fabricated AXEL transmitter simultaneously achieved both the sufficient modulated light output of 8.9 dBm and an excellent quality eye diagram for a 53-Gbaud PAM4 signal with the TDECQ value of 1.52 dB. We investigated the effect of the integrated SOA on the AXEL's performance and found no significant degradation of the quality of the eye diagram or the bit error rate (BER) characteristics of the 53-Gbaud PAM4 back-to-back configuration, even when the AXEL achieved high modulated light output power. We were also able to extend the 53-Gbaud PAM4 fiber-amplifier-less optical link to 60 km by using the AXEL transmitter and APD receiver, and achieved error-free transmission assuming KP4-forward error collection (FEC). These results demonstrate that the enhanced modulated light output using the AXEL can successfully extend the 53-Gbaud PAM4 reach with a simple transmission setup.

224-Gbit/s 4-PAM operation of a high-modulation-bandwidth high-output-power Hi-FIT AXEL transmitter

Shigeru Kanazawa, Takahiko Shindo, Mingchen Chen, Yasuhiko Nakanishi, Hirotaka Nakamura, and Hideaki Matsuzaki
Opt. Lett. 47(12) 3019-3022 (2022)

High-power SOA-integrated EADFB laser for long-reach passive optical network systems

Mingchen Chen, Takahiko Shindo, Shigeru Kanazawa, Yasuhiko Nakanishi, Atsushi Kanda, Toshihide Yoshimatsu, and Kimikazu Sano
OSA Continuum 4(2) 498-506 (2021)

Novel approach for chirp and output power compensation applied to a 40-Gbit/s EADFB laser integrated with a short SOA

Wataru Kobayashi, Masakazu Arai, Takeshi Fujisawa, Tomonari Sato, Toshio Ito, Koichi Hasebe, Shigeru Kanazawa, Yuta Ueda, Takayuki Yamanaka, and Hiroaki Sanjoh
Opt. Express 23(7) 9533-9542 (2015)

Optimization of PAM-4 transmitters based on lumped silicon photonic MZMs for high-speed short-reach optical links

Shiyu Zhou, Hsin-ta Wu, Khosrov Sadeghipour, Carmelo Scarcella, Cormac Eason, Marc Rensing, Mark J. Power, Cleitus Antony, Peter O’Brien, Paul D. Townsend, and Peter Ossieur
Opt. Express 25(4) 4312-4325 (2017)

420 Gbit/s optical signal reception enabled by an inductive gain peaking Ge-Si photodetector with 80 GHz bandwidth

Xiao Hu, Dingyi Wu, Ye Liu, Min Liu, Daigao Chen, Lei Wang, Xi Xiao, and Shaohua Yu
Opt. Express 31(11) 17987-17998 (2023)