Open AccessSilicon photonic time-wavelength pulse interleaver for photonic analog-to-digital converters
Author(s) -
Hayk Gevorgyan,
Kenaish Al Qubaisi,
Marcus S. Dahlem,
Anatol Khilo
Publication year - 2016
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.013489
Subject(s) - optics , multiplexing , photonics , wavelength division multiplexing , photonic integrated circuit , free spectral range , silicon photonics , resonator , vernier scale , channel spacing , materials science , pulse shaping , wavelength , optoelectronics , physics , computer science , laser , telecommunications
A 4-channel time-wavelength optical pulse interleaver is implemented on a silicon chip. The interleaver forms a train of pulses with periodically changing wavelengths by demultiplexing the input pulse train into several wavelength components, delaying these components with respect to each other, and multiplexing them back into a single path. The interleaver is integrated on a silicon chip, with two arrays of microring resonator filters performing multiplexing and demultiplexing, and long sections of silicon waveguides acting as delay lines. The 4-channel interleaver is designed for an input pulse train with 1 GHz repetition rate, and is measured to have 0.35% RMS pulse timing error, insertion loss between 1.6 dB and 5.8 dB in different channels, crosstalk below -24 dB, and 52 nm free spectral range achieved using the Vernier effect.