Compact 100 Gb/s ethernet transmitter optical sub-assembly using polarization beam combiner

Takaharu Ohyama, Akira Ohki, Kiyoto Takahata, Toshio Ito, Nobuhiro Nunoya, Takeshi Fujisawa, Shigeru Kanazawa, Ryuzo Iga, Hiroaki Sanjoh

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


A compact transmitter optical sub-assembly (TOSA) has been developed for a 100 Gb/s Ethernet system with a long transmission distance of 40 km over single-mode fiber. The TOSA consists of electro-absorption modulator integrated distributed feedback laser diode arrays and a polarization beam combiner for wavelength multiplexing to obtain a high optical output power and a high dynamic extinction ratio. We confirmed that the TOSA successfully achieved an error-free four-lane $\times25.8~{\rm Gb}/{\rm s}$ transmission, i.e., a total bit-rate of 100 Gb/s, over 40 km.

Original languageEnglish
Article number6648435
Pages (from-to)2416-2418
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number24
Publication statusPublished - 2013 Dec 15
Externally publishedYes


  • 100 Gb/s Ethernet
  • TOSA
  • distributed feedback laser
  • electro-absorption modulator
  • polarization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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