Low Power Consumption DQPSK Demodulator Using Silica-Based Planar Lightwave Circuit

Author

Sakamaki, Yohei ; Hattori, Kuninori ; Nasu, Yusuke ; Kamei, Shin ; Goh, Takashi ; Hashimoto, Toshikazu ; Takahashi, Hiroshi ; Inoue, Yasuyuki

Author_Institution

NTT Photonics Labs., NTT Corp., Atsugi, Japan

Volume

21

Issue

14

fYear

2009

fDate

7/15/2009 12:00:00 AM

Firstpage

978

Lastpage

980

Abstract

We demonstrate a low power consumption differential quadrature phase-shift keying (DQPSK) demodulator using silica-based planar lightwave circuit (PLC) technology. A reduction of the power consumption is achieved by suppressing the temperature dependence of the circuit characteristic and eliminating a thermo-electric cooler (TEC) device. The maximum power consumption of the fabricated demodulator with an operating temperature range of -5degC to 70degC is 1.4 W, which is 60% lower than that of a conventional PLC demodulator with TEC. We report experimental results that demonstrate its good demodulation performance for a 43-Gb/s DQPSK system.

Keywords

demodulators; low-power electronics; optical fibre communication; optical planar waveguides; quadrature phase shift keying; silicon compounds; DQPSK demodulator; SiO₂; bit rate 43 Gbit/s; differential quadrature phase-shift keying; low-power consumption; power 1.4 W; silica-based planar lightwave circuit; Differential quadrature phase-shift keying (DQPSK); Mach–Zehnder interferometer; optical planar waveguides;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2009.2021275

Filename

4912314