A Photonic Temporal Integrator With an Ultra-Long Integration Time Window Based on an InP-InGaAsP Integrated Ring Resonator

Author

Weilin Liu ; Ming Li ; Guzzon, R.S. ; Norberg, Erik J. ; Parker, John S. ; Coldren, Larry A. ; Jianping Yao

Author_Institution

Microwave Photonics Res. Lab., Univ. of Ottawa, Ottawa, ON, Canada

Volume

32

Issue

20

fYear

2014

fDate

Oct.15, 15 2014

Firstpage

3654

Lastpage

3659

Abstract

A photonic temporal integrator with an ultra-wide integration time window implemented based on a photonic integrated circuit (PIC) in an InP-InGaAsP material system consisting of semiconductor optical amplifiers (SOAs) and current-injection phase modulators (PMs) is proposed and experimentally demonstrated. The proposed photonic integrated integrator employs a ring structure coupled with two bypass waveguides. The tunable coupling between the ring and the waveguides is realized by a multi-mode interference (MMI) Mach-Zehnder interferometer coupler. Within the ring, two SOAs are incorporated to compensate for the insertion loss. In addition, there is a current injection PM in the ring for wavelength tuning. The use of the device provides a photonic temporal integrator with an ultra-wide integration time window and a tunable operation wavelength in a single PIC. The proposed integrator is fabricated and experimentally verified. The integration time window as wide as 6331 ps is achieved, which is an order of magnitude longer than that provided by the previously reported photonic integrators.

Keywords

III-V semiconductors; Mach-Zehnder interferometers; indium compounds; integrated optics; optical couplers; optical losses; optical materials; optical modulation; optical resonators; optical tuning; optical waveguides; phase modulation; semiconductor optical amplifiers; InP-InGaAsP; InP-InGaAsP integrated ring resonator; InP-InGaAsP material system; MMI; SOA; bypass waveguides; current injection PM; current-injection phase modulators; insertion loss; multimode interference Mach-Zehnder interferometer coupler; photonic integrated circuit; photonic integrated integrator; photonic temporal integrator; ring structure; semiconductor optical amplifiers; single PIC; time 6331 ps; tunable coupling; tunable operation wavelength; ultralong integration time window; ultrawide integration time window; wavelength tuning; Couplers; Couplings; Optical ring resonators; Optical waveguides; Photonics; Semiconductor optical amplifiers; Analog optical signal processing; photonic integrated circuits (PICs); temporal integrator; ultrafast processing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2323249

Filename

6814826