Evolution of Passive Optical Component Technologies for Fiber-Optic Communication Systems

Tomlinson, W. J.

doi:10.1109/jlt.2008.921914

Cited by 26 publications

(9 citation statements)

References 14 publications

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“…OAM light beams have azimuthal phase dependence given by exp(il ), in which 'l', the azimuthal mode order, corresponds to the number of 2 phase jumps across the wavefront of the OAM beam. This is similar in concept to the advantages that wavelength-selective networking and switching provided historically on top of simple wavelength multiplexed high-capacity point-to-point systems [8,9]. However, there might be a value in performing networking functions in the optical domain on OAM-based data channels.…”

Section: Introductionmentioning

confidence: 75%

Reconfigurable 22 Orbital-Angular-Momentum-Based Optical Switching of 50-Gbaud QPSK Channels

Ren

Willner

Xie

et al. 2013

39th European Conference and Exhibition on Optical Communication (ECOC 2013)

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Fig. 2. Functional block diagram of a 2x2 OAM switch. The switching is performed with the help of mode down conversion, grating based mode switching and mode up conversion.Abstract We experimentally demonstrate a reconfigurable 2×2 switch for four OAM-multiplexed beams carrying 50-Gbaud QPSK data channels. The performance of the switch is measured for different switch configurations. An OSNR penalty of < 2.5 dB is observed for the switched channels.

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Section: Introductionmentioning

confidence: 75%

Reconfigurable 22 Orbital-Angular-Momentum-Based Optical Switching of 50-Gbaud QPSK Channels

Ren

Willner

Xie

et al. 2013

39th European Conference and Exhibition on Optical Communication (ECOC 2013)

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“…Furthermore, the main optical passive technologies are considered within the proposed framework to support the design of the network topology: power splitters and optical couplers, ADD/DROP multiplexers, multi-channel MUX/DEMUX, optical band-pass filters, etc. [72,73]. Figure 3 shows an example of a multi-level star-stars network topology designed with MUX/DEMUXES and optical couplers and splitters to support eight BSs distributed in two DL/UL land clusters with four BSs on each of them.…”

Section: Ne7: Odn Topologymentioning

confidence: 99%

Knowledge-based framework for the design of millimeter-wave (60 GHz) radio over fiber land networks

et al. 2015

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This paper presents the research work involved in the development of a knowledge-based framework for the design of millimeter-wave 60 GHz radio over fiber (RoF) land networks. It combines object-oriented, rule-based, technical information, and procedural functions to support engineers in the conceptual and preliminary design of a network. The overall framework is organized in two main modules: the first module is a tutorial of the terminology and basic principles in the design of RoF networks. The second module is a design assistant system that requests input data from the user about the functional network requirements and its prioritized figures of merit. The proposed design assistant is capable of providing support on the major activities of the 60 GHz RoF land network design such as downlink and uplink channel assignment and network clustering, wavelength allocation, optical link design, and network integration. The assistant is user interactive through the implementation of a graphical user interface. To illustrate the validation of such framework, we present a case of study of a network design with specific requirements.

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“…on a silicon substrate. Thus, these basic components are fabricated and interconnected by wires [5]. In fact, in the silica waveguide components, the integrated circuit technology has strict requirements for thickness, refractive index, and residual stress of all the formed films.…”

Section: Introductionmentioning

confidence: 99%

Study of Birefringence and Stress Distribution of SiO2 Film Optical Waveguide on Silicon Wafer

Sun

Shang

et al. 2019

Coatings

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Silica waveguide planar lightwave circuit (PLC) technology is driving the broad applications of various functional components to meet the increasing demands of the industry due to its advanced performance in large-scale wafer mass production. Despite the intense research interests in understanding and relaxing the stress causing the optical birefringence, not much research has been devoted to investigating the stress distribution. In this article, the thermal stress, growth-caused stress, and structural stress are comparably studied. The birefringence distribution of a 6 μm-thick SiO2 film from the center to the edge on a 6-inch silicon wafer was measured to be 0.0006 to 0.0038, leading to an equivalent stress distribution cross the wafer from −170 to −1000 MPa. This implies that the compressive stress of the thick SiO2 film on the wafer was nonuniformly distributed; however, it gradually increased from the center to the edge. Meanwhile, the measured stress of a SiO2 film decreased with the flow rate of the doped GeH4 gas. The algebraic sum of the above three stresses reached excellent agreement with the measurement results in both distribution form and amplitude. In both research and production, the agreeable optical property distributions between the theoretical calculations and experimental measurements are more sustainable to further improving the yields of SiO2 thick film PLC products.

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Evolution of Passive Optical Component Technologies for Fiber-Optic Communication Systems

Cited by 26 publications

References 14 publications

Reconfigurable 22 Orbital-Angular-Momentum-Based Optical Switching of 50-Gbaud QPSK Channels

Reconfigurable 22 Orbital-Angular-Momentum-Based Optical Switching of 50-Gbaud QPSK Channels

Knowledge-based framework for the design of millimeter-wave (60 GHz) radio over fiber land networks

Study of Birefringence and Stress Distribution of SiO2 Film Optical Waveguide on Silicon Wafer

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