Xuezhe Zheng,
Ivan Shubin,
Guoliang Li,
Thierry Pinguet,
Attila Mekis,
Jin Yao,
Hiren Thacker,
Ying Luo, Joey Costa,
Kannan Raj,
John E Cunningham,
Ashok V Krishnamoorthy
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ABSTRACT: We report the first compact silicon CMOS 1x4 tunable multiplexer/ demultiplexer using cascaded silicon photonic ring-resonator based add/drop filters with a radius of 12 microm, and integrated doped-resistor thermal tuners. We measured an insertion loss of less than 1 dB, a channel isolation of better than 16 dB for a channel spacing of 200 GHz, and a uniform 3 dB pass band larger than 0.4 nm across all four channels. We demonstrated accurate channel alignment to WDM ITU grid wavelengths using integrated silicon heaters with a tuning efficiency of 90 pm/mW. Using this device in a 10 Gbps data link, we observed a low power penalty of 0.6 dB.
Optics Express 03/2010; 18(5):5151-60. · 3.59 Impact Factor
