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Tunable silicon etalon for simultaneous spectral filtering and wavelength monitoring of a DWDM transmitter

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7 Author(s)
Niemi, T. ; Metrol. Res. Inst., Helsinki Univ. of Technol., Espoo, Finland ; Uusimaa, M. ; Tammela, S. ; Heimala, P.
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A temperature-tunable Fabry-Perot filter made of silicon has been developed and applied for simultaneous spectral filtering and wavelength monitoring of a directly modulated DFB laser. This novel device decreases the dispersion penalty of a cost-effective dense wavelength-division-multiplexing (DWDM) transmitter in a long-haul transmission link. Moreover, it allows the operating wavelength of the transmitter to be accurately monitored in real time.

Published in:

Photonics Technology Letters, IEEE  (Volume:13 ,  Issue: 1 )