Optical Arbitrary Waveform Measurement (OAWM) Using Silicon Photonic Slicing Filters

Journal of Lightwave Technology, vol. 40, pp. 1705–1717

Abstract

We demonstrate an optical arbitrary waveform measurement (OAWM) system that exploits a bank of silicon photonic (SiP) frequency-tunable coupled-resonator optical waveguide (CROW) filters for gapless spectral slicing of broadband optical signals. The spectral slices are coherently detected using a frequency comb as a multi-wavelength local oscillator (LO) and stitched together by digital signal processing (DSP). For high-quality signal reconstruction, we have implemented a maximum-ratio combining (MRC) technique based on precise calibration of the complex-valued opto-electronic transfer functions of all detection paths. In a proof-of-concept experiment, we demonstrate the viability of the scheme by implementing a four-channel system that offers an overall detection bandwidth of 140 GHz. Exploiting a femtosecond laser with precisely known pulse shape for calibration along with dynamic amplitude and phase estimation, we reconstruct 100 GBd QPSK, 16QAM and 64QAM optical data signals. The reconstructed signals show improved quality compared to that obtained with a single high-speed intradyne receiver, while the electronic bandwidth requirements of the individual coherent receivers are greatly reduced.

Authors 15

1. Dengyang Fang

   Karlsruhe Institute of Technology

   Affiliation as printed

   Institute of Photonics and Quantum Electronics (IPQ) and the Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany

2. Andrea Zazzi Aachen Institute of Integrated Photonics (IPH)

   RWTH Aachen University

   Affiliation as printed

   Institute of Integrated Photonics (IPH), RWTH Aachen University, Aachen, Germany

3. Juliana Müller Aachen Institute of Integrated Photonics (IPH)

   RWTH Aachen University

   Affiliation as printed

   Institute of Integrated Photonics (IPH), RWTH Aachen University, Aachen, Germany

4. Daniel Drayß

   Karlsruhe Institute of Technology

   Affiliation as printed

   Institute of Photonics and Quantum Electronics (IPQ) and the Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany

5. Christoph Füllner

   Karlsruhe Institute of Technology

   Affiliation as printed

   Institute of Photonics and Quantum Electronics (IPQ) and the Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany

6. Pablo Marin-Palomo

   Karlsruhe Institute of Technology

   Affiliation as printed

   Institute of Photonics and Quantum Electronics (IPQ) and the Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany

7. Alireza Tabatabaei Mashayekh Aachen Institute of Integrated Photonics (IPH)

   RWTH Aachen University

   Affiliation as printed

   Institute of Integrated Photonics (IPH), RWTH Aachen University, Aachen, Germany

8. Arka Dipta Das Aachen Institute of Integrated Photonics (IPH)

   RWTH Aachen University

   Affiliation as printed

   Institute of Integrated Photonics (IPH), RWTH Aachen University, Aachen, Germany

9. Maxim Weizel

   Paderborn University

   Affiliation as printed

   Heinz Nixdorf Institute (HNI), University of Paderborn, Paderborn, Germany

10. Sergiy Gudyriev

    Paderborn University

    Affiliation as printed

    Heinz Nixdorf Institute (HNI), University of Paderborn, Paderborn, Germany

11. W. Freude

    Karlsruhe Institute of Technology

    Affiliation as printed

    Institute of Photonics and Quantum Electronics (IPQ) and the Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany

12. Sebastian Randel

    Karlsruhe Institute of Technology

    Affiliation as printed

    Institute of Photonics and Quantum Electronics (IPQ) and the Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany

13. J. Christoph Scheytt

    Paderborn University

    Affiliation as printed

    Heinz Nixdorf Institute (HNI), University of Paderborn, Paderborn, Germany

14. Jeremy Witzens Aachen Institute of Integrated Photonics (IPH)

    RWTH Aachen University

    Affiliation as printed

    Institute of Integrated Photonics (IPH), RWTH Aachen University, Aachen, Germany

15. Christian G. Koos

    Karlsruhe Institute of Technology

    Affiliation as printed

    Institute of Photonics and Quantum Electronics (IPQ) and the Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany