March 13, 2017

Hybrid integrated wavelength and reflectivity tunable III-V/Silicon transmitter

  • Bolle C.
  • Brenot R.
  • Chang C.
  • Chen Y.
  • De Valicourt G.
  • Dong P.
  • Earnshaw M.
  • Eggleston M.
  • Kaneda N.
  • Maho A.
  • Melikyan A.

We demonstrate a novel wavelength-tunable hybrid silicon-based transmitter with integrated reflectivity tunable mirror. First, designs of a novel hybrid laser based on reflective symmetric and asymmetric Mach-Zehnder interferometer based mirrors are studied with single and double ring intra-cavity filters respectively. Asymmetric configuration is used in order to increase the tuning range of a single ring laser by more than 90 %. Furthermore, adjustment of the mirror reflectivity allows for control of laser characteristics such as threshold current, wall-plug efficiency, output power and linewidth. Finally, an ultra-compact hybrid tunable III-V/Si transmitter with more than 28 nm tuning range is then demonstrated based on such hybrid cavity design and one ring modulator. We successfully achieved modulation up to 40 Gbit/s and transmission over 20 (100) km at 25 (10) Gbit/s.

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Recent Publications

March 23, 2017

Performance Comparison of Capacity-Achieving Modulation Formats for Transoceanic Optical Systems

  • Fernandez De Jauregui Ruiz I.
  • Ghazisaeidi A.
  • Tran P.

We experimentally compare the performance of geometrically-shaped (64APSK) and probabilistically-shaped 64QAM (PS64QAM) formats considering linear and nonlinear penalties.

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LWIP and Wi-Fi Boost Link Management

  • K S.
  • Kim B.
  • Ling J.
  • Lopez-Perez D.
  • Ming Ding
  • Vasudevan S.

3GPP LWIP Release 13 technology and its prestandard version Wi-Fi Boost have recently emerged as an efficient LTE and Wi-Fi integration at the IP layer, allowing uplink on LTE and downlink on Wi-Fi. This solves all the contention problems of Wi-Fi and allows an optimum usage of the unlicensed band ...

March 13, 2017

Advanced C+L-Band Transoceanic Transmission Systems Based on Probabilistically-Shaped PDM-64QAM

  • Brindel P.
  • Buchali F.
  • Carbo Meseguer A.
  • Charlet G.
  • Fernandez I.
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  • Hu Q.
  • Renaudier J.
  • Rios-Muller R.
  • Schmalen L.
  • Tran P.

We review the most recent, advanced concepts and methods employed in the cutting-edge spectrally-efficient coherent fiber-optic transoceanic transmission systems, such as probabilistic shaping, adaptive digital nonlinear compensation, rate-adaptive spatially-coupled low density parity check codes, and dual-band C+L-band transmission. Building upon all these concepts and methods, we demonstrate transmission of 179 ...