title: High sensitivity 10Gb/s Si photonic receiver based on a low-voltage waveguide-coupled Ge avalanche photodetector.
abstract: We demonstrate low-voltage germanium waveguide avalanche photodetectors (APDs) with a gain × bandwidth product above 100GHz. A photonic receiver based on such a Ge APD, including a 0.13μm SiGe BiCMOS low-noise trans-impedance amplifier and a limiting amplifier, is realized. A 5.8dB sensitivity improvement is demonstrated at -5.9V bias at an avalanche gain of 6 through bit error ratio measurements. The absolute sensitivity in avalanche mode is -23.4dBm and -24.4dBm at a bit error ratio of 1 × 10(-12) and 1 × 10(-9) respectively.
authors.forename: H T
authors.initials: HT
authors.lastname: Chen
authors.forename: J
authors.initials: J
authors.lastname: Verbist
authors.forename: P
authors.initials: P
authors.lastname: Verheyen
authors.forename: P
authors.initials: P
authors.lastname: De Heyn
authors.forename: G
authors.initials: G
authors.lastname: Lepage
authors.forename: J
authors.initials: J
authors.lastname: De Coster
authors.forename: P
authors.initials: P
authors.lastname: Absil
authors.forename: X
authors.initials: X
authors.lastname: Yin
authors.forename: J
authors.initials: J
authors.lastname: Bauwelinck
authors.forename: J
authors.initials: J
authors.lastname: Van Campenhout
authors.forename: G
authors.initials: G
authors.lastname: Roelkens