All-optical wavelength-routing switch with monolithically integrated filter-free tunable wavelength converters and an AWG

Toru Segawa, Shinji Matsuo, Takaaki Kakitsuka, Yasuo Shibata, Tomonari Sato, Yoshihiro Kawaguchi, Yasuhiro Kondo, Ryo Takahashi

Research output: Contribution to journalArticle

20 Citations (Scopus)


We present a compact 4×8 wavelength-routing switch that monolithically integrates fast tunable wavelength converters (TWCs) and an arrayed-waveguide grating (AWG) for optical packet switching. The TWC consists of a double-ring-resonator-coupled tunable laser which allows rapid and stable switching, and an optical gate based on a parallel amplifier structure which prevents an input optical signal from being routed through the AWG (filter-free operation). A deep-ridge waveguide technology, employed for the AWG and ring resonators, facilitates the fabrication of the switch and makes the device compact. The filter-free TWCs achieve low crosstalk of the input optical signal of less than -22 dB. The wavelength routing operation of a non-return-to-zero (NRZ) signal at 10 Gbit/s is achieved with a switching time of less than 5 ns.

Original languageEnglish
Pages (from-to)4340-4345
Number of pages6
JournalOptics Express
Issue number5
Publication statusPublished - 2010 Mar 1
Externally publishedYes


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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