CMOS-compatible dual-output silicon modulator for analog signal processing

Spector, Steven J.; Geis, M. W.; Zhou, Guowei; Grein, Matthew E.; Gan, Fuwan; Popovic, M.A.; Yoon, Junghyo; Lennon, Donna; Ippen, Erich P.; Kärtner, Franz X.; Lyszczarz, T. M.

doi:10.1364/oe.16.011027

Cited by 66 publications

(23 citation statements)

References 11 publications

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“…In particular, the rapidly growing field of silicon photonics will enable the integration of major optoelectronic components such as mode-locked lasers [27,122,123], high-speed modulators [124][125][126][127], and Si/Ge photodiodes [128,129] His research interests include classical and quantum noise in electronic and optical devices, femtosecond lasers and their applications in frequency metrology, precision timing distribution, high-speed signal processing, and attosecond science.…”

Section: Discussionmentioning

confidence: 99%

Attosecond‐precision ultrafast photonics

Kim

Kärtner

2010

Laser & Photonics Reviews

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We review our recent progress toward attosecondprecision ultrafast photonics based on ultra-low timing jitter optical pulse trains from mode-locked lasers. In femtosecond mode-locked lasers, the concentration of a large number of photons in an extremely short pulse duration enables the scaling of timing jitter into the attosecond regime. To characterize such jitter levels, we developed new attosecond-resolution measurement techniques and show that standard fiber lasers can achieve sub-fs high-frequency jitter. By leveraging the ultralow jitter of free-running mode-locked lasers, we pursued highprecision optical-optical and optical-microwave synchronization techniques. Optical signals spanning 1.5 octaves were synthesized by attosecond-precision timing and phase synchronization of two independent mode-locked lasers. High-stability microwave signals were also synthesized from mode-locked lasers with drift-free sub-10-fs precision. We further demonstrated the attosecond-precision distribution of optical pulse trains to remote locations via timing-stabilized fiber links. Finally, the application of optical pulse trains for high-resolution sampling and analog-to-digital conversion is discussed.The ultra-low timing jitter of optical pulse trains from femtosecond mode-locked lasers can be used for the attosecond-precision generation, distribution, measurement, and synchronization of optical and microwave signals.

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Section: Discussionmentioning

confidence: 99%

Attosecond‐precision ultrafast photonics

Kim

Kärtner

2010

Laser & Photonics Reviews

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“…Since the output impedance of the radio frequency (RF) power supply is 50 , the 3-dB bandwidth given by the formula 1/(2πRC) is 21.1 GHz, provided that a lumped electrode is applied. Compared with the reported modulators of the same phase shifter length [12], [19], the bandwidth of our structure is competitive. The internal resistance does not limit the modulation bandwidth, so there is no need to reduce it with the penalty of increasing the optical loss.…”

Section: Implantation Condition Optimizationmentioning

confidence: 94%

Optimization of Ion Implantation Condition for Depletion-Type Silicon Optical Modulators

Bogaerts

Keersgieter

2010

IEEE J. Quantum Electron.

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Abstract-We study the influence of ion implantation conditions on the performance of depletion-type silicon optical modulators by a combined simulation of the process flow, the electrical characteristic, and the beam propagation. Through calculations using different implantation positions, energies, and tilt angles, this paper reveals that a gap between specific implantation windows is able to alleviate the modulation efficiency degradation due to the lateral straggling of implanted ions, while a tilt angle reduces the optical loss without harming the modulation efficiency. After an optimization of the implantation condition, the extinction ratio of the Mach-Zehnder modulator can be improved by 4.6 dB, while its optical loss falls from 3 to 2.47 dB. Finally, a simplified doping pattern that eliminates two implantation steps is discussed.

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“…The device in Figure 4 can also be operated in reverse bias [21]. When operated in reverse bias, a depletion region forms at the n-type and p-type junction at the edge of the waveguide.…”

Section: Optical Modulatormentioning

confidence: 99%

Silicon photonics devices for integrated analog signal processing and sampling

Spector

Sorace-Agaskar

2014

Nanophotonics

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Silicon photonics offers the possibility of a reduction in size weight and power for many optical systems, and could open up the ability to build optical systems with complexities that would otherwise be impossible to achieve. Silicon photonics is an emerging technology that has already been inserted into commercial communication products. This technology has also been applied to analog signal processing applications. MIT Lincoln Laboratory in collaboration with groups at MIT has developed a toolkit of silicon photonic devices with a focus on the needs of analog systems. This toolkit includes low-loss waveguides, a high-speed modulator, ring resonator based filter bank, and all-silicon photodiodes. The components are integrated together for a hybrid photonic and electronic analog-to-digital converter. The development and performance of these devices will be discussed. Additionally, the linear performance of these devices, which is important for analog systems, is also investigated.

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CMOS-compatible dual-output silicon modulator for analog signal processing

Cited by 66 publications

References 11 publications

Attosecond‐precision ultrafast photonics

Attosecond‐precision ultrafast photonics

Optimization of Ion Implantation Condition for Depletion-Type Silicon Optical Modulators

Silicon photonics devices for integrated analog signal processing and sampling

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