# Journal of Lightwave Technology

## Filter Results

Displaying Results 1 - 25 of 35
• ### [Front cover]

Publication Year: 2007, Page(s): C1
| PDF (257 KB)
• ### Journal of Lightwave Technology publication information

Publication Year: 2007, Page(s): C2
| PDF (38 KB)

Publication Year: 2007, Page(s):1109 - 1110
| PDF (41 KB)
• ### Connection Availability Analysis of Shared Backup Path-Protected Mesh Networks

Publication Year: 2007, Page(s):1111 - 1119
Cited by:  Papers (33)
| | PDF (281 KB) | HTML

Dual-span failures dominate the system unavailability in a mesh-restorable network with full restorability to single-span failures. Traditional availability analysis based on reliability block diagrams is not suitable for survivable networks with shared spare capacity. Therefore, a new concept is proposed to facilitate the calculations of connection availability. A U.S. network consisting of 19 no... View full abstract»

• ### Design Strategies for Meeting Unavailability Targets Using Dedicated Protection in DWDM Networks

Publication Year: 2007, Page(s):1120 - 1129
Cited by:  Papers (2)
| | PDF (358 KB) | HTML

Service providers operating dense-wavelength-division-multiplexed networks are often faced with the problem of designing their networks such that a certain level of service availability can be delivered to their customers. This paper introduces optimization-based algorithms that address this problem efficiently and effectively. For a given network topology, specified by existing dark-fiber links, ... View full abstract»

• ### Proactive Wavelength Pre-Emption for Supporting Absolute QoS in Optical-Burst-Switched Networks

Publication Year: 2007, Page(s):1130 - 1137
Cited by:  Papers (10)
| | PDF (665 KB) | HTML

Optical burst switching (OBS) has increasingly received attention as a potentially bandwidth-efficient approach to support an all-optical Internet for the ever-growing broadband traffic. In this paper, the authors address how to provide efficient end-to-end quality-of-service guarantees in OBS networks. Proactive wavelength pre-emption is proposed in order to achieve the upper bound on end-to-end ... View full abstract»

• ### An Optical Network Architecture With Distributed Switching Inside Node Clusters Features Improved Loss, Efficiency, and Cost

Publication Year: 2007, Page(s):1138 - 1146
Cited by:  Papers (19)  |  Patents (2)
| | PDF (367 KB) | HTML

The novel core network architecture presented in this paper realizes distributed all-optical switching of payload by partitioning the network into a number of geographically limited domains, where two-way reservations are effective. Thus, inside each domain, loss is eliminated, while traffic from many nodes can be aggregated into single bursts, improving efficiency. Clustered nodes contribute cont... View full abstract»

• ### Tunable Transmission Resonant Filter and Modulator With Vertical Gratings

Publication Year: 2007, Page(s):1147 - 1151
Cited by:  Papers (33)
| | PDF (284 KB) | HTML

Resonant filters in waveguides with vertical gratings have been realized on a silicon-on-insulator wafer. Two identical uniformly distributed Bragg reflectors with vertical gratings are separated by a quarter wavelength phase offset. Experimental studies show a broad stopband and a narrow transmission band which shifts with changing substrate temperature that is also illuminated by an external las... View full abstract»

• ### Idle Protection Capacity Reuse in Multiclass Optical Networks

Publication Year: 2007, Page(s):1152 - 1162
Cited by:  Papers (8)
| | PDF (533 KB) | HTML

Optical networks carrying traffic belonging to different survivability classes must ensure not only the proper survivability differentiation but also the efficient network resource utilization. Current approaches improve network resource utilization by carrying low-class preemptable traffic along high-class spare resources, which are idle (i.e., unutilized) during failure-free conditions. In this ... View full abstract»

• ### Calculation of Achievable Information Rates of Long-Haul Optical Transmission Systems Using Instanton Approach

Publication Year: 2007, Page(s):1163 - 1168
Cited by:  Papers (15)
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A method for estimation of achievable information rates of high-speed optical transmission systems is proposed. This method consists of two steps: 1) approximating probability density functions for energy of pulses, which is done by the instanton approach, and 2) estimating achievable information rates by applying a method originally proposed by Arnold and Pfitser. Numerical results for a specific... View full abstract»

• ### Theoretical, Numerical, and Experimental Analysis of Optical Fiber Tapering

Publication Year: 2007, Page(s):1169 - 1176
Cited by:  Papers (19)
| | PDF (493 KB) | HTML

An optical fiber taper is fabricated by heating and stretching a fiber. The resulting taper shape is important as it strongly affects optical performance. In this paper, the tapering process of solid optical fiber is modeled and analyzed under several heating and stretching conditions. The fiber material is assumed to be of non-Newtonian inelastic type. The results show that for a given heating pr... View full abstract»

• ### Transient Heating of PMMA Preforms for Microstructured Optical Fibers

Publication Year: 2007, Page(s):1177 - 1183
Cited by:  Papers (3)
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A uniform transverse temperature profile is crucial for the direct draw of microstructured optical fibers (MOFs). This can be difficult to achieve for preforms made from materials of poor thermal conductivity, such as polymer. In this paper, we have investigated the transient heating process for drawing MOFs from preforms made from polymethylmethacrylate. Numerical results show that inclusion of r... View full abstract»

• ### Design of Wideband Single-Polarization Single-Mode Photonic Crystal Fiber

Publication Year: 2007, Page(s):1184 - 1189
Cited by:  Papers (24)
| | PDF (240 KB) | HTML

The present paper proposes a novel design for achieving single-polarization single-mode (SPSM) operation in photonic crystal fiber (PCF), using a rectangular-lattice PCF with two lines of three central air holes enlarged. The proposed PCF that is composed entirely of silica material is modeled by a full-vector finite element method with anisotropic perfectly matched layers. The position of the reg... View full abstract»

• ### Dispersion-Compensating Fiber Raman Amplifiers With Step, Parabolic, and Triangular Refractive Index Profiles

Publication Year: 2007, Page(s):1190 - 1197
Cited by:  Papers (11)
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This paper presents a comprehensive analysis of the performance of a gain-flattened coaxial fiber Raman amplifier with respect to the refractive index profile. The variation of the dispersion coefficient and the end-end gain spectrum of the coaxial fiber Raman amplifier against the core structure as a function of the step, parabolic, and triangular profiles are analyzed. The analysis shows that th... View full abstract»

• ### Fictive-Temperature Mapping in Highly Ge-Doped Multimode Optical Fibers

Publication Year: 2007, Page(s):1198 - 1205
Cited by:  Papers (4)
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In this paper, a Fourier transform infrared focal-plane-array detector was used to image the "bond-stretching" vibration mode observed near sigma=1120 cm-1 of highly Ge-doped graded-index multimode optical fibers (GI-MMFs). We show that the distribution of the peak wavenumber sigma is nonuniform across the core and cladding of the MMF, i.e., sigma is smaller in the core due to the Ge-do... View full abstract»

• ### Characterization of Ultrathin Dielectric Films With the Prism-Coupler Method

Publication Year: 2007, Page(s):1206 - 1212
Cited by:  Papers (7)
| | PDF (248 KB) | HTML

We demonstrate a technique of applying the prism-coupler method to the characterization of dielectric films that are too thin to support enough guided modes in air for the normal application of the method. The technique is based on applying suitable index-matching liquids on the surface of the thin film to increase the number of effective indexes available for the determination of the refractive i... View full abstract»

• ### Fiber-Optic Transceiver Module for High-Speed Intrasatellite Networks

Publication Year: 2007, Page(s):1213 - 1223
Cited by:  Papers (14)
| | PDF (766 KB) | HTML

High-speed intrasatellite networks are needed to interconnect units such as synthetic aperture radars, high-resolution cameras, and fast image-compression processors that produce data beyond gigabits per second. We have developed a fiber-optic link, named SpaceFibre, which operates up to 3.125 Gb/s and is compatible with the existing SpaceWire network. The link provides symmetrical, bidirectional,... View full abstract»

• ### Analysis and Design of Photonic Crystal Fibers Based on an Improved Effective-Index Method

Publication Year: 2007, Page(s):1224 - 1230
Cited by:  Papers (18)
| | PDF (340 KB) | HTML

The modal characteristics of photonic crystal fibers (PCFs), with guiding cores consisting of one or seven missing airholes, are investigated with the finite element method and compared to those of step-index fibers (SIFs). To extend the applicability of the classical SIF theories to PCFs, the effective refractive index of photonic crystal cladding and the effective core radius of a PCF are studie... View full abstract»

• ### Temperature-Increase Characteristics in Bent Hole-Assisted Fiber Under High Power

Publication Year: 2007, Page(s):1231 - 1237
Cited by:  Papers (3)  |  Patents (1)
| | PDF (426 KB) | HTML

We describe an experimental investigation of the temperature-increase characteristics in hole-assisted fibers (HAFs) under high power and with multiple bends. The suppression of the temperature increase by trapping the leaked light within the fiber is observed for the first time. We also propose a simple model to describe the temperature increase in HAF, and we show that the proposed model well ex... View full abstract»

• ### Effects of Intensity Modulation of Light Source on Brillouin Optical Correlation Domain Analysis

Publication Year: 2007, Page(s):1238 - 1246
Cited by:  Papers (16)
| | PDF (952 KB) | HTML

The effects of the intensity modulation (IM) of light source on fiber-distributed sensors based on Brillouin optical correlation domain analysis (BOCDA) are analyzed by numerical simulation, and the results are experimentally confirmed. We show that the shape of the Brillouin gain spectrum in the BOCDA system has a particular dependence on the optical spectrum of light source and that it can be co... View full abstract»

• ### Analytical Modeling of Speed Response of Heterojunction Bipolar Phototransistors

Publication Year: 2007, Page(s):1247 - 1255
Cited by:  Papers (11)
| | PDF (214 KB) | HTML

This paper describes a new comprehensive analytical charge-control model, which includes all the significant delays associated with heterojunction bipolar phototransistors (HPTs). A minimum number of approximations and assumptions have been made throughout its development. The model is accurate and predictive and provides an excellent insight into the operation of the HPT since the equations devel... View full abstract»

• ### Spectral-Amplitude-Coded OCDMA Optimized for a Realistic FBG Frequency Response

Publication Year: 2007, Page(s):1256 - 1263
Cited by:  Papers (28)
| | PDF (759 KB) | HTML

We develop a methodology for numerical optimization of fiber Bragg grating frequency response to maximize the achievable capacity of a spectral-amplitude-coded optical code-division multiple-access (SAC-OCDMA) system. The optimal encoders are realized, and we experimentally demonstrate an incoherent SAC-OCDMA system with seven simultaneous users. We report a bit error rate (BER) of 2.7times10... View full abstract»

• ### 1 $times$ 2 Wavelength Multiplexer With High Transmittances Using Extraneous Self-Imaging Phenomenon

Publication Year: 2007, Page(s):1264 - 1268
Cited by:  Papers (8)
| | PDF (369 KB) | HTML

This paper introduces a wavelength multiplexer (MUX) using the extraneous self-imaging (Ex_SI) phenomenon, which is not mentioned in multimode-interference theory. The Ex_SI phenomenon in silica-based multimode waveguides was experimentally studied. Then, using data for the Ex_SI phenomenon, the wavelength MUX for the wavelengths of 1310 and 1550 nm was developed. The optimum length of the multimo... View full abstract»

• ### Planar Concave Grating Demultiplexer Fabricated on a Nanophotonic Silicon-on-Insulator Platform

Publication Year: 2007, Page(s):1269 - 1275
Cited by:  Papers (63)
| | PDF (326 KB) | HTML

We show that a nanophotonic silicon-on-insulator (SOI) platform offers many advantages for the implementation of planar concave grating (PCG) demultiplexers, as compared with other material systems. We present for the first time the design and measurement results of a PCG demultiplexer fabricated on a nanophotonic SOI platform using standard wafer scale CMOS processes including deep-UV lithography... View full abstract»

• ### Design and Application of Compact and Highly Tolerant Polarization-Independent Waveguides

Publication Year: 2007, Page(s):1276 - 1283
Cited by:  Papers (20)  |  Patents (1)
| | PDF (584 KB) | HTML

In this paper, the design, fabrication, and application of a highly tolerant polarization-independent optical-waveguide structure suited for operation in the third communication window is presented. The waveguide structure has been optimized toward minimized sensitivity to technological tolerances and low fabrication complexity. The tolerance analysis has been based on the typical processing toler... View full abstract»

## Aims & Scope

The Journal of Lightwave Technology is comprised of original contributions, both regular papers and letters, covering work in all aspects of optical guided-wave science, technology, and engineering. Manuscripts are solicited which report original theoretical and/or experimental results which advance the technological base of guided-wave technology. Tutorial and review papers are by invitation only. Topics of interest include the following: fiber and cable technologies, active and passive guided-wave componentry (light sources, detectors, repeaters, switches, fiber sensors, etc.); integrated optics and optoelectronics; and systems, subsystems, new applications and unique field trials. System oriented manuscripts should be concerned with systems which perform a function not previously available, out-perform previously established systems, or represent enhancements in the state of the art in general.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Peter J. Winzer
Alcatel-Lucent Bell Labs