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Proceedings Article

High-speed integrated photodetectors for 40-Gbit/s applications

[+] Author Affiliations
Andreas Umbach

u2t Photonics AG (Germany)

Proc. SPIE 5246, Active and Passive Optical Components for WDM Communications III, 434 (August 19, 2003); doi:10.1117/12.511217
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From Conference Volume 5246

  • Active and Passive Optical Components for WDM Communications III
  • Achyut K. Dutta; Abdul Ahad S. Awwal; Niloy K. Dutta; Kazuo Fujiura
  • Orlando, FL | September 07, 2003

abstract

Photonic integrated photodetectors are built by combining guided-wave, optoelectronic and microwave devices. They offer high conversion efficiency, extremely high speed operation and high power linearity up to 20 mW of optical power. A careful design of the applied spot size converter allows an optimized fiber-chip coupling and polarization insensitive performance of the photodiodes. Recent results of electro-optic sampling measurements reveal 3 dB- and 6 dB-bandwidth of 64 GHz and 100 GHz, respectively, as well as an excellent phase linearity up to 160 GHz. Further integration of two photodiodes leads to e.g. 40 GHz balanced detectors enabling DPSK transmission for long-haul systems. Using optical pre-amplification an excellent sensitivity of -32 dBm was achieved at 40 Gbit/s.

© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Andreas Umbach
"High-speed integrated photodetectors for 40-Gbit/s applications", Proc. SPIE 5246, Active and Passive Optical Components for WDM Communications III, 434 (August 19, 2003); doi:10.1117/12.511217; http://dx.doi.org/10.1117/12.511217


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