Bit rate and wavelength transparent all-optical clock recovery scheme for NRZ-coded PRBS signals

Slovak, J.; Bornholdt, C.; Kreissl, J.; Bauer, S.; Biletzke, M.; Schlak, M.; Sartorius, B.

doi:10.1109/lpt.2006.871834

Cited by 27 publications

(15 citation statements)

References 8 publications

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“…The RZ-like format is commonly referred to as pseudo-RZ (PRZ) format. Conventional approaches for NRZ-to-PRZ format conversion use linear [29,30] and nonlinear [31,32] approaches, as well as integrated optics in the form of asymmetric Mach-Zehnder interferometers (AMZIs) [33]. Most recently [34], we proposed and reported initial demonstration of using silicon microring notch filters for NRZ-to-PRZ format conversion.…”

Section: Silicon Microring Filters For Nrz-to-prz Format Conversionmentioning

confidence: 99%

Microring and microdisk resonator integrated circuits on a silicon chip

Poon

Zhou

et al. 2007

SPIE Proceedings

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We report our latest experimental and numerical work on silicon microresonator passive and electro-optic active devices. On the passive device front, we demonstrate an electrically tunable silicon microring notch filter for converting 3.6-Gbps non-return-to-zero (NRZ) data format to return-to-zero (RZ)-like data format. We show that the converted RZ-like data quality highly depends on the notch filter extinction ratios. On the active device front, we demonstrate a silicon microring modulator using a double-coupled U-bend waveguide as a feedback and a pair of laterally integrated injectiontype p-i-n diodes for bias/signal modulation. We show that the microring modulator extinction ratios are electrically controlled by applying a DC-bias across either the feedback-waveguide or the microring while applying a modulation signal across the other p-i-n diode. We also propose silicon microdisk modulators with selectively integrated depletiontype Schottky diodes. Our numerical simulations suggest that the microdisk structures can be advantageous compared with microring structures. We show that electrical rise time on the order of a few ps is feasible using microdisks. We also allude to on-going work on extending the microresonator devices discussed here to building functional silicon optoelectronics integrated circuits.Keywords: silicon microring, silicon microdisk, silicon microresonators, free-carrier plasma dispersion, silicon photonics, silicon optoelectronics integrated circuits INTRODUCTIONSilicon micrometer-scale ring/disk resonator devices that are fabricated by the mature CMOS-compatible processes have recently attracted considerable interests for optical signal processing applications on photonics chips including in nextgeneration wavelength-agile optical networks [1], as components for optical interconnects on computer chips [2-4], and as on-chip refractive-index-based label-free biosensors [5,6]. As an integrated narrowband optical filter, silicon microring resonator-based channel add-drop and notch filters have attained high quality factors Q ~ 10 5 [7,8]. Majority of the demonstrated silicon microresonators are based on conventional circular/racetrack microring [7-11] and microdisk [12, 13] resonators, with alternative devices from our research group using polygonal-shaped [14-17] and spiral-shaped [18, 19] microdisk resonators. Various silicon microresonator-based switches and modulators using thermooptical [20], mechanical [21], optical [22], and electrooptical (EO) [23-25] mechanisms have been demonstrated. Among these microresonator tuning methods, EO tuning by means of the well-understood free-carrier plasma dispersion effect in silicon [26] offers an appealing combination of beyond-GHz-speed switching, as well as the possibility of electronic control using CMOS circuits on the silicon substrate. Specifically, Xu et al. in their pioneering work [23] demonstrated GHz-speed silicon microring modulators with laterally integrated injection-type p-i-n diodes. Owing to the high-Q resonance sensitivity to minu...

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Section: Silicon Microring Filters For Nrz-to-prz Format Conversionmentioning

confidence: 99%

Microring and microdisk resonator integrated circuits on a silicon chip

Poon

Zhou

et al. 2007

SPIE Proceedings

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“…[1], [2] To realize the real time optical signal processing at the receiver unit, we need the clock information of the received signal to determine the value of each bit. Many researches have been done for this area under the name of optical clock recovery [3], [4]. A number of optical clock recovery methods have been proposed and demonstrated for high speed optical communications for a return-to-zero (RZ) signal of which data format has clock information in itself.…”

Section: Introductionmentioning

confidence: 99%

Optical PRZ signals of an optical clock generation scheme using an FBG filter

Lee

2012

2012 International Conference on ICT Convergence (ICTC)

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We propose an optical clock generation scheme and investigate characteristics of generated clock signals through a fiber Bragg grating (FBG) filter. The equation for the clock component in an optical spectrum indicates that disturbance of the optical spectrum of a nonreturn-to-zero (NRZ) signal can generate NRZ clock signal. Optical experiment of the clock generation scheme for a 10 Gb/s NRZ signal shows the pseudoreturn-to-zero (PRZ) signals through the scheme.

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“…Latter result has practical relevance because applications of such devices in high bit-rate optical communication require extremely stable self-pulsations and chaos must be avoided. 21 The vast literature on delayed feedback control nearly exclusively considers the stabilization of periodic orbits. Optical delayed feedback control, however, represents a different and new class of chaos control because the stabilized periodic pulsation is not simply an orbit but it is a periodically modulated wave.…”

Section: Introductionmentioning

confidence: 99%

All-optical noninvasive control of semiconductor lasers

2008

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All-optical noninvasive control of a multi-section semiconductor laser by means of time-delayed feedback from an external Fabry-Perot cavity is realized experimentally. The role of the optical phase as a specific new control parameter of this type of delayed-feedback control is stressed. Using phase-dependent feedback from a resonant plane Fabry-Perot interferometer, the stabilization of unstable steady states and unstable self-pulsations is achieved, including experimental demonstration of all-optical chaos control. In the latter experiment, optical chaos is transformed into a regular 12.9 GHz self-pulsation. This result is the fastest realization of chaos control ever reported. The control is noninvasive, only less than one per mille feedback keeps the stabilized states stable.

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Bit rate and wavelength transparent all-optical clock recovery scheme for NRZ-coded PRBS signals

Cited by 27 publications

References 8 publications

Microring and microdisk resonator integrated circuits on a silicon chip

Microring and microdisk resonator integrated circuits on a silicon chip

Optical PRZ signals of an optical clock generation scheme using an FBG filter

All-optical noninvasive control of semiconductor lasers

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