Fast-response, wide-dynamic-range optical equalisation based on silicon photonic platform

Fast-response, wide-dynamic-range optical equalisation based on silicon photonic platform

The fast optical power equalisation, using a monolithic integrated germanium photodetector and a silicon variable optical attenuator on a compact silicon photonic platform, is demonstrated. With an external electronic feedback circuit, the output power of the device is stabilised within a residual d...

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Veröffentlicht in:Electronics letters 2010-12, Vol.46 (25), p.1-1
Hauptverfasser: Kou, R, Yamada, K, Tsuchizawa, T, Watanabe, T, Park, S, Nishi, H, Shinojima, H, Ishikawa, Y, Wada, K, Itabash, S
Format: Artikel
Sprache:eng
Schlagworte:
Attenuators
Deviation
Electronics
Feedback circuits
Noise levels
Photonics
Platforms
Silicon
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Zusammenfassung:The fast optical power equalisation, using a monolithic integrated germanium photodetector and a silicon variable optical attenuator on a compact silicon photonic platform, is demonstrated. With an external electronic feedback circuit, the output power of the device is stabilised within a residual deviation of 2.7 dB for 22 dB input power variation. For a surge pulse, a sudden input power increase of over 16 dB can be suppressed within 50 ns for a 3 dB recovery.
ISSN:0013-5194
1350-911X