Low Dark Current 1.55 Micrometer InAs Quantum Dash Waveguide Photodiodes

Yating Wan, Chen Shang, Jian Huang, Zhiyang Xie, Aditya Jain, Justin Norman, Baile Chen, Arthur C. Gossard, John E. Bowers

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Photodiodes and integrated optical receivers operating at 1.55 micrometer (μm) wavelength are crucial for long-haul communication and data transfer systems. In this paper, we report C-band InAs quantum dash (Qdash) waveguide photodiodes (PDs) with a record-low dark current of 5 pA, a responsivity of 0.26 A/W at 1.55 μm, and open eye diagrams up to 10 Gb/s. These Qdash-based PDs leverage the same epitaxial layers and processing steps as Qdash lasers and can thus be integrated with laser sources for power monitors or amplifiers for preamplified receivers, manifesting themselves as a promising alternative to their InGaAs and Ge counterparts in low-power optical communication links.
Original languageEnglish (US)
Pages (from-to)3519-3527
Number of pages9
JournalACS Nano
Issue number3
StatePublished - Mar 24 2020
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-18

ASJC Scopus subject areas

  • General Physics and Astronomy
  • General Materials Science
  • General Engineering


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