Photonic-crystal lasers on silicon for chip-scale optical interconnects

Koji Takeda, Takuro Fujii, Akihiko Shinya, Eiichi Kuramochi, Masaya Notomi, Koichi Hasebe, Takaaki Kakitsuka, Shinji Matsuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Optical interconnects are expected to reduce the power consumption of ICT instruments. To realize chip-to-chip or chip-scale optical interconnects, it is essential to fabricate semiconductor lasers with a smaller energy cost. In this context, we are developing lambda-scale embedded active-region photonic-crystal (LEAP) lasers as light sources for chip-scale optical interconnects. We demonstrated the first continuous-wave (CW) operation of LEAP lasers in 2012 and reported a record low threshold current and energy cost of 4.8 μA and 4.4 fJ/bit at 10 Gbit/s in 2013. We have also integrated photonic crystal photodetectors on the same InP chip and demonstrated waveform transfer along 500-μm-long waveguides. Although LEAP lasers exhibit excellent performance, they have to be integrated on Si wafers for use as light sources for chip-scale optical interconnects. In this paper, we give a brief overview of our LEAP lasers on InP and report our recent progress in fabricating them on Si. We bonded the InP wafers with quantum-well gain layers directly on thermally oxidized Si wafers and performed all process steps on the Si wafer, including high-temperature regrowth. After this process modification, we again achieved CW operation and obtained a threshold current of 57 μA with a maximum output power of more than 3.5 μW at the output waveguides. An output light was successfully guided through 500 × 250-nm InP waveguides.

Original languageEnglish
Title of host publicationNovel In-Plane Semiconductor Lasers XV
EditorsAlexey A. Belyanin, Peter M. Smowton
PublisherSPIE
ISBN (Electronic)9781510600027
DOIs
Publication statusPublished - 2016 Jan 1
Externally publishedYes
EventNovel In-Plane Semiconductor Lasers XV - San Francisco, United States
Duration: 2016 Feb 152016 Feb 18

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9767
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNovel In-Plane Semiconductor Lasers XV
CountryUnited States
CitySan Francisco
Period16/2/1516/2/18

Fingerprint

Optical Interconnects
optical interconnects
Optical interconnects
Silicon
Photonic crystals
Photonic Crystal
Chip
chips
photonics
Laser
Lasers
Wafer
silicon
Waveguides
crystals
lasers
wafers
Waveguide
Light sources
waveguides

Keywords

  • Buried heterostructure
  • On-Si lasers
  • Optical interconnects
  • Photonic-crystal lasers
  • Wafer bonding

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Takeda, K., Fujii, T., Shinya, A., Kuramochi, E., Notomi, M., Hasebe, K., ... Matsuo, S. (2016). Photonic-crystal lasers on silicon for chip-scale optical interconnects. In A. A. Belyanin, & P. M. Smowton (Eds.), Novel In-Plane Semiconductor Lasers XV [976710] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9767). SPIE. https://doi.org/10.1117/12.2208312

Photonic-crystal lasers on silicon for chip-scale optical interconnects. / Takeda, Koji; Fujii, Takuro; Shinya, Akihiko; Kuramochi, Eiichi; Notomi, Masaya; Hasebe, Koichi; Kakitsuka, Takaaki; Matsuo, Shinji.

Novel In-Plane Semiconductor Lasers XV. ed. / Alexey A. Belyanin; Peter M. Smowton. SPIE, 2016. 976710 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9767).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Takeda, K, Fujii, T, Shinya, A, Kuramochi, E, Notomi, M, Hasebe, K, Kakitsuka, T & Matsuo, S 2016, Photonic-crystal lasers on silicon for chip-scale optical interconnects. in AA Belyanin & PM Smowton (eds), Novel In-Plane Semiconductor Lasers XV., 976710, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9767, SPIE, Novel In-Plane Semiconductor Lasers XV, San Francisco, United States, 16/2/15. https://doi.org/10.1117/12.2208312
Takeda K, Fujii T, Shinya A, Kuramochi E, Notomi M, Hasebe K et al. Photonic-crystal lasers on silicon for chip-scale optical interconnects. In Belyanin AA, Smowton PM, editors, Novel In-Plane Semiconductor Lasers XV. SPIE. 2016. 976710. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.2208312
Takeda, Koji ; Fujii, Takuro ; Shinya, Akihiko ; Kuramochi, Eiichi ; Notomi, Masaya ; Hasebe, Koichi ; Kakitsuka, Takaaki ; Matsuo, Shinji. / Photonic-crystal lasers on silicon for chip-scale optical interconnects. Novel In-Plane Semiconductor Lasers XV. editor / Alexey A. Belyanin ; Peter M. Smowton. SPIE, 2016. (Proceedings of SPIE - The International Society for Optical Engineering).
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