Polymer High Frequency Broadband Traveling Wave Electro-optic Modulators PDF Download
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Author: Wenshen Wang
Publisher:
ISBN:
Category :
Languages : en
Pages : 176
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Author: Wenshen Wang
Publisher:
ISBN:
Category :
Languages : en
Pages : 176
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Book Description
Author: Antao Chen
Publisher: CRC Press
ISBN: 1439825076
Category : Science
Languages : en
Pages : 555
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Book Description
"provides the full, exciting story of optical modulators. a comprehensive review, from the fundamental science to the material and processing technology to the optimized device design to the multitude of applications for which broadband optical modulators bring great value. Especially valuable in my view is that the authors are internationally
Author: Douglas L. Craig
Publisher:
ISBN:
Category :
Languages : en
Pages : 436
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Author: M. Di Domenico
Publisher:
ISBN:
Category :
Languages : en
Pages : 58
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Author: Zwickel, Heiner
Publisher: KIT Scientific Publishing
ISBN: 3731511436
Category :
Languages : en
Pages : 196
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Book Description
SOH (silicon-organic hybrid) elektrooptische Modulatoren kombinieren Siliziumphotonik mit organischen elektro-optischen Materialien. Dieses Buch befasst sich mit Aspekten, die speziell für den Einsatz von SOH-Modulatoren in praktischen optischen Hochgeschwindigkeitskommunikationssystemen relevant sind, wie z. B. Aufbau- und Verbindungstechnik, Modellierung und die Implementierung effizienter Modulationsformate für IM/DD-Formate. - Silicon-organic hybrid (SOH) electro-optic modulators combining silicon photonic structures with organic EO materials are investigated. This book addresses aspects that are specifically relevant for the use of SOH modulators in practical high-speed optical communication systems such as packaging, modelling of the device, and the implementation of efficient intensity-modulation/direct-detection (IM/DD) modulation formats.
Author: Kai Wei
Publisher:
ISBN:
Category : Analog-to-digital converters
Languages : en
Pages : 229
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Book Description
High-speed, broadband, and compact analog-to-digital converters (ADC) are the key components in signal waveform generation and efficient detection for future telecommunication and remote sensing applications. Canonical electronic ADCs suffers from limited effective number of bits (ENOB) at giga-sampling rate due to electronic clock aperture jitter and comparator ambiguity due to the transistor bandwidth limitations. An electrically interleaved ADC operating at lower sampling rates or a hybrid ADC using optically sampled and electrically quantized structures that leverages the low optical aperture jitter of mode-locked laser and high-resolution electronic quantization are not only power consuming but are also limited in effective sampling rate within 10 GS/s as the quantizer outputs still must be accurately aligned in time to form the input information in electronic domain. On the other hand, the reported all-optical ADC (AOADC) benefits from the low jitter of optical clock, while quantizes the input signal in optical domain using spatial modulation. In this dissertation, various design innovations leading to paths of a fully integrated 40 GS/s AOADC with 8 ENOB by incorporating integrated stable clock using self-forced optical phase modulator (PM) based opto-electronic oscillators (OEO) and single-channel spatial light modulator (SLM) by advancing research innovations of the past laboratory graduates.Design of optical PM and SLM designs are based on broadband traveling-wave coupled microstrip (CMS) electrode structures with improved phase and angular deflection modulation using slow-waveguiding behavior of 1-D photonic crystal (PhC) topologies as superstrate using optical beam propagation (OptiBPM), finite-difference-time-domain (OptiFDTD), and finite element method (HFSS). Optimized design geometries of 1-D PhC over 1550 nm is considered to minimize the optical loss while the modulation sensitivity is enhanced by about 108% compared to modulator designs without the PhC layer. Similar spatial modulation sensitivity improvements are achieved for SLMs with leaky wave designs. These designs are implemented on low-cost Si-photonics and electro-optic (E-O) chromophores on low loss and higher index PMMI host material rather than standard PMMA. Novel design of OEO based on PM rather than Mach-Zehnder modulator (MZM) has advantage of bias voltage independence that makes OEO less sensitive to shift in bias voltage due to piezo-electric or pyro-electric properties of E-O material, but then requires phase to intensity modulators (PM-IM). Sagnac-loop based OEO is demonstrated, where close-in to carrier phase noise at 10 GHz are reduced using self-forced techniques of self-injection locking and dual self-phase-locked loop (SILDPLL) for long-term stability of optical clocks to predict timing jitter as low as 19.5 fs using 3-/5-km fiber mandrills in modular experiment.To achieve a monolithically integrated AOADC consisting of the proposed SLM and stable optical clock provided by OEOs with the estimated performance, a heterogeneously integrated InP multi-mode laser (MML) as an on-chip OEO source, where inter-modal oscillation and PM-IM convertor rather than relying on Sagnac-loop design, where a non-reciprocal phase shifter (NRPS) is not compatible with Si on-chip integration at the present. RF signal generated from MML typically suffers poor stabilization and 25-fold reduction in timing jitter is measured compared to the free-running case, when SEILDPLL with external optical delays of 5-/15-(mu)s are employed. Moreover, for a fully integrated design rather than modular fiber mandrills, both non-dispersive and dispersive add-drop filter (ADF) resonators are modeled using both full-wave OptiFDTD and proven MATLAB codes on SiN based optical time delays of 975 ns within a chip area of 27 cm2 and 0.1 cm2, respectively. Furthermore, limits of performance improvements using a combined stabilization processes of self-mode-locking (SML) techniques and self-forced SML are investigated. Timing jitter of a 13-mode SML (e.g., fabricated using HHI foundry service) with 700 ns SEIL and 700-/900-ns DSPLL integrated IOEO is estimated to be only 7.6 fs at 10 GHz.
Author: Christopher C. Davis
Publisher: Cambridge University Press
ISBN: 1107728975
Category : Science
Languages : en
Pages : 887
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Book Description
Covering a broad range of topics in modern optical physics and engineering, this textbook is invaluable for undergraduate students studying laser physics, optoelectronics, photonics, applied optics and optical engineering. This new edition has been re-organized, and now covers many new topics such as the optics of stratified media, quantum well lasers and modulators, free electron lasers, diode-pumped solid state and gas lasers, imaging and non-imaging optical systems, squeezed light, periodic poling in nonlinear media, very short pulse lasers and new applications of lasers. The textbook gives a detailed introduction to the basic physics and engineering of lasers, as well as covering the design and operational principles of a wide range of optical systems and electro-optic devices. It features full details of important derivations and results, and provides many practical examples of the design, construction and performance characteristics of different types of lasers and electro-optic devices.
Author:
Publisher:
ISBN:
Category : Electrooptics
Languages : en
Pages : 296
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Electro-optic polymers in traveling wave modulators have the potential for very wide band operation (>100 GHz) due to the low dielectric constant of the polymers and in addition very low voltage drive requirements because of the high EQ coefficients promised by the polymer chemists. Recent advances in the understanding of dipole-dipole interactions and new techniques in modulator fabrication have resulted in modulators which realize this potential. We report here on polymer traveling wave modulators. The high thermal stability (900 deg C) and low propagation loss (1-2 dB/cm) of these devices make them commercially viable.
Author: Feng Yuan Gan
Publisher:
ISBN:
Category :
Languages : en
Pages : 262
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Book Description
"High-speed guided-wave $LiNbO sb3$ electrooptical modulators are important components for future broadband optical fiber communications. Various types of high speed modulators have been reported; among them the Mach-Zehnder interferometric modulators using Y-branches is one of the most widely used structures for broadband modulation because of its simplicity and easy fabrication. Traveling-wave integrated optical modulators fabricated in substrate materials for which the optical and microwave velocities are equal offer the potential of very broad modulation bandwidth. In order to achieve broadband electrooptic intensity modulators, design optimization is very important. A thorough understanding of the characteristics of the electrode structure permits parameter optimization in the design of electrooptic modulators. In this thesis, calculations of the electric field distribution, impedance, and the effective index for microwaves are presented using the Fourier-series method for a quasi-static analysis of coplanar waveguide (CPW). Using this approach, the design optimization will also be discussed." --
