Topic
Extinction ratio
About: Extinction ratio is a research topic. Over the lifetime, 8541 publications have been published within this topic receiving 111908 citations.
Papers published on a yearly basis
Papers
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TL;DR: Silicon Mach-Zehnder modulators with reduced series resistance in lateral PN junction rib-waveguide phase shifters are characterized in eye-diagram measurements and reveal extinction ratio beyond 10dB at 10.0–12.5Gbps, approaching lithium-niobate modulators in high-speed performance.
Abstract: Silicon Mach-Zehnder modulators with reduced series resistance in lateral PN junction rib-waveguide phase shifters for enhanced high-speed response are fabricated and characterized. Extinction ratio higher than 10 dB is obtained at 10.3-11.7 Gbps with mask margins of 27% (10.3-Gbps 10GBE), 16% (10.7-Gbps STM-64/OC-192) and 10% (11.3-Gbps STM-64/OC-192) in eye-diagram measurements incorporating mask tests using a RF cut-off filter. In unfiltered eye-diagram measurements without mask tests, extinction ratio higher than 13 dB is obtained at 10.0-12.5 Gbps. The silicon modulators reveal high-speed performance comparable with that of lithium-niobate modulators in high-speed optical fiber telecommunications.
47 citations
TL;DR: By adopting the ultrafast SOA model associated with intraband mechanism, the 40Gb/s NRZ-to-RZ format conversion is successfully demonstrated with numerical simulation and the proposed scheme is robust and potential for applications in future optical networks.
Abstract: We propose a novel all-optical format conversion from nonreturn-to-zero (NRZ) to return-to-zero (RZ) based on single semiconductor optical amplifier (SOA) and a detuning optical bandpass filter (OBF). By adopting the ultrafast SOA model associated with intraband mechanism, the 40Gb/s NRZ-to-RZ format conversion is successfully demonstrated with numerical simulation. We investigate the influence of the filter detuning, extinction ratio, conversion efficiency, output pulsewidth, and filter bandwidth. These simulation results confirm the feasibility of our scheme. The proposed scheme is robust and potential for applications in future optical networks.
47 citations
TL;DR: In this article, a 3-port Mach-Zehnder interferometer was used for all-optical wavelength conversion of 10 Gb/s data with simultaneous regeneration of the extinction ratio.
Abstract: All-optical wavelength conversion of 10 Gb/s data with simultaneous regeneration of the extinction ratio is achieved by means of a monolithic 3-port Mach-Zehnder interferometer. The reported devices are based on an all active multiquantum-well waveguide structure with optical amplifiers in the input/output gates. Wavelength conversion is realized by optical cross-phase modulation in a counter propagative operation mode without applying an optical filter. The 3-port Mach-Zehnder interferometer can provide either inversion or noninversion of wavelength converted 10 Gb/s data.
47 citations
21 Mar 2010
TL;DR: In this article, a 320fJ/bit transmitter made of a Si microring modulator flip-chip bonded to a CMOS driver was reported, which exhibited a wide open eye with extinction ratio >7dB at 5Gb/s.
Abstract: We report a 320fJ/bit transmitter made of a Si microring modulator flip-chip bonded to a CMOS driver. The transmitter consumes only 1.6mW power, and exhibits a wide open eye with extinction ratio >7dB at 5Gb/s.
47 citations
Patent•
01 Feb 2001
TL;DR: In this paper, an integrated surface emitting laser and modulator device is described that includes a detector for monitoring the optical power output of the laser and another detector for measuring an extinction ratio of the modulator.
Abstract: An integrated surface emitting laser and modulator device is disclosed that includes a detector for monitoring the optical power output of the laser and another detector for monitoring an extinction ratio of the modulator. A cleave physically and electrically separates the laser from the modulator device. The device has a collimating lens disposed on a top surface.
47 citations