Author(s): Zhang, ZK (Zhang, Zhike); Li, JY (Li, Jinye); Zhao, ZP (Zhao, Zeping); Liu, JG (Liu, Jianguo); Wang, XJ (Wang, Xingjun)

Source: CHINESE OPTICS LETTERS Volume: 17 Issue: 12 Article Number: 120604 DOI: 10.3788/COL201917.120604 Published: DEC 10 2019

Abstract: We demonstrate a package-level passive equalization technology in which the wire-bonding-induced resonance effect is used to compensate for the limited gain strength within the Nyquist frequency. The corresponding gain strength under various inductance and capacitance combinations could be quantitatively determined using a numerical simulation. With the increase in the Nyquist frequency, the capacitance shows a greater effect on the gain strength than the inductance. Therefore, the parasitic capacitance should be decreased to realize the desired gain strength at a higher Nyquist frequency. With this equalization technology, gain strength of 5.8 dB is obtained at 22 GHz, which can compensate for the limited bandwidth for the 112 Gbps pulse amplitude modulation (PAM4) signal. The experimental results show that 112 Gbps/lambda PAM4 transmission based on a directly modulated laser (DML) module can be realized with a bit error rate of 1 x 10(-3) at a received optical power of 3 dBm.

Accession Number: WOS:000504051000004

ISSN: 1671-7694

Full Text: http://www.clp.ac.cn/EN/Article/OJ3529fb1662973dba