Optimized Silicon QPSK Modulator With 64-Gb/s Modulation Speed

Author

Haike Zhu ; Linjie Zhou ; Tao Wang ; Lei Liu ; Chiyan Wong ; Yanyang Zhou ; Rui Yang ; Xinwan Li ; Jianping Chen

Author_Institution

Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China

Volume

7

Issue

3

fYear

2015

fDate

Jun-15

Firstpage

1

Lastpage

6

Abstract

We demonstrate a compact silicon quadrature phase-shift keying (QPSK) modulator consisting of two nested Mach-Zehnder interferometers with a size of 4.5-mm². The V₁₁ · L of the modulator is 1.4 V · cm with an insertion loss of 8 dB. In addition, 64-Gb/s QPSK modulation is achieved with an error vector magnitude (EVM) of 24.4% and bit error rate (BER) of 2.1 × 10^-5 at the received optical power of -10 dBm after the device and an EVM of 31.7% and BER of 8.4 × 10^-4 at the received optical power of 0 dBm after 10-km single-mode fiber transmission. The estimated power consumption is 7.1 pJ/bit for the 64-Gb/s QPSK modulation.

Keywords

Mach-Zehnder interferometers; elemental semiconductors; error statistics; optical communication equipment; optical fibre communication; optical fibre losses; optical modulation; quadrature phase shift keying; silicon; BER; EVM; Mach-Zehnder interferometers; Si; bit error rate; bit rate 64 Gbit/s; compact silicon quadrature phase-shift keying; distance 10 km; error vector magnitude; insertion loss; loss 8 dB; optical power; optimized silicon QPSK modulator; power consumption; single-mode fiber transmission; High-speed optical techniques; Optical fibers; Optical modulation; Optical variables measurement; Phase shift keying; Silicon; Silicon photonics; coherent communication; high speed silicon QPSK modulator; high-speed silicon quadrature phase-shift keying (QPSK) modulator; integrated optical devices;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2015.2425875

Filename

7096917