title: A tunable 1x4 silicon CMOS photonic wavelength multiplexer/demultiplexer for dense optical interconnects.
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.
authors.affiliation: Sun Microsystems Physical Sciences Center, San Diego, CA 92121, USA. Xuezhe.zheng@sun.com
authors.forename: Xuezhe
authors.initials: X
authors.lastname: Zheng
authors.forename: Ivan
authors.initials: I
authors.lastname: Shubin
authors.forename: Guoliang
authors.initials: G
authors.lastname: Li
authors.forename: Thierry
authors.initials: T
authors.lastname: Pinguet
authors.forename: Attila
authors.initials: A
authors.lastname: Mekis
authors.forename: Jin
authors.initials: J
authors.lastname: Yao
authors.forename: Hiren
authors.initials: H
authors.lastname: Thacker
authors.forename: Ying
authors.initials: Y
authors.lastname: Luo
authors.forename: Joey
authors.initials: J
authors.lastname: Costa
authors.forename: Kannan
authors.initials: K
authors.lastname: Raj
authors.forename: John E
authors.initials: JE
authors.lastname: Cunningham
authors.forename: Ashok V
authors.initials: AV
authors.lastname: Krishnamoorthy