Abstract

We summarize our experimental exploration of the capabilities of an ultrabroad-bandwidth plasmonic Mach-Zehnder modulator (MZM), in an intensity modulation and direct detection (IM/DD) system for short-reach optical transmission up to 10 km. We study modulation, transmission, and reception of ultrahigh-symbol-rate (up to 304 GBd) multi-level optical signals with two different signaling schemes: pulse amplitude modulation (PAM), with up to 8 amplitude levels and partial-response-encoded binary (polybinary) modulation with memory length up to 4. By mapping the performance to a concatenated soft-decision (SD) and hard-decision (HD) forward error correction (FEC) coding scheme, a net bitrate of 363.4 Gbit/s is possible with PAM-8 signaling and 279.0 Gbit/s with tetrabinary (polybinary) signaling after 10 km standard single-mode fiber transmission. Considering an HD-only coding scheme, a net bitrate of 318.0 Gbit/s is possible with PAM-6 and 277.1 Gbit/s with tetrabinary.

Silicon-organic hybrid (SOH) Mach-Zehnder modulators for 100 GBd PAM4 signaling with sub-1 dB phase-shifter loss

Clemens Kieninger, Christoph Füllner, Heiner Zwickel, Yasar Kutuvantavida, Juned N. Kemal, Carsten Eschenbaum, Delwin L. Elder, Larry R. Dalton, Wolfgang Freude, Sebastian Randel, and Christian Koos
Opt. Express 28(17) 24693-24707 (2020)

Net-432-Gb/s/λ PS-PAM transmission based on advanced DSP and single DAC for 400 G/λ IM/DD links

An Yan, Guoqiang Li, Sizhe Xing, Wangwei Shen, Yongzhu Hu, Aolong Sun, Jianyang Shi, Ziwei Li, Chao Shen, Nan Chi, and Junwen Zhang
Opt. Lett. 49(7) 1656-1659 (2024)

Nonlinearity-aware PS-PAM-16 transmission for C-band net-300-Gbit/s/λ short-reach optical interconnects with a single DAC

Junwei Zhang, Xiong Wu, Qifeng Yan, Heyun Tan, Xiaojian Hong, Chao Fei, Alan Pak Tao Lau, and Chao Lu
Opt. Lett. 47(12) 3035-3038 (2022)

Amplifier-free 4×96 Gb/s PAM8 transmission enabled by modified Volterra equalizer for short-reach applications using directly modulated lasers

Di Li, Lei Deng, Yao Ye, Yucheng Zhang, Haiping Song, Mengfan Cheng, Songnian Fu, Ming Tang, and Deming Liu
Opt. Express 27(13) 17927-17939 (2019)

30 Gbit/s PAM4 transmission using an 8-GHz directly modulated multi-section laser

Marcos Troncoso Costas, Ahmed Galib Reza, Hima Putta, Ankit Sharma, Gaurav Jain, Mark Smyth, Frank Smyth, John MacDougall, Colm Browning, Francisco Diaz Otero, and Liam Barry
Opt. Express 30(12) 20194-20202 (2022)