VPIcomponentMaker Fiber Optics: Design of Fiber Amplifiers ...
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VPIcomponentMaker™Fiber Optics is an R&D tool for model- ing, optimization, and design of single-mode and multimode fiber-based optical devices such as doped-fiber, Raman and parametric amplifiers, CW and pulsed optical fiber sources, multimode amplifiers for SDM, optical signal processing for telecommunication, high-power and ultrafast applications. The signal and noise models based on single- and multi- mode, full-wave and parameterized representations are ideally suited for efficient analysis. The stationary and dynamic Er/Yb/Tm- or co-doped fiber and waveguide models calculate the fiber modes and simulate signal amplification, noise generation, and higher-order limiting effects in configurations with single-mode or multimode signals and pumps, core- or cladding pumping at single or multiple wavelengths. The undoped fiber model simu- lates linear and nonlinear optical effects due to chromatic dispersion and PMD, Kerr nonlinearity, Raman, Brillouin and Rayleigh scattering. Based on elementary building blocks, simple and sophisti- cated amplifier and laser topologies including active and passive components, signal monitors, control elements and feedback loops can be defined by the user. The general optimization capabilities can be combined with specialized heuristic and deterministic algorithms. Virtual instru- mentation provides versatile means to characterize the designed equipment. Benefits Design fiber-based lasers, amplifiers and optical signal-processing schemes Modulate ultrafast phenomena in optical fibers Professional simulation environment with powerful optimization and automation capabilities Identify the impact of different physical effects in your designs Reduce the need for physical experimentation in the lab Increase productivity of R&D work by identifying critical parameters and design flaws Improve communication between members of collaborative projects & through the supply chain Design of Fiber Amplifiers & Lasers Fiber Optics New Features Improved Capabilities
Transcript of VPIcomponentMaker Fiber Optics: Design of Fiber Amplifiers ...
VPIcomponentMaker™Fiber Optics is an R&D tool for model-ing, optimization, and design of single-mode and multimode fiber-based optical devices such as doped-fiber, Raman and parametric amplifiers, CW and pulsed optical fiber sources, multimode amplifiers for SDM, optical signal processing for telecommunication, high-power and ultrafast applications.
The signal and noise models based on single- and multi-mode, full-wave and parameterized representations are ideally suited for efficient analysis. The stationary and dynamic Er/Yb/Tm- or co-doped fiber and waveguide models calculate the fiber modes and simulate signal amplification, noise generation, and higher-order limiting effects in configurations with single-mode or multimode signals and pumps, core- or cladding pumping at single
or multiple wavelengths. The undoped fiber model simu-lates linear and nonlinear optical effects due to chromatic dispersion and PMD, Kerr nonlinearity, Raman, Brillouin and Rayleigh scattering.
Based on elementary building blocks, simple and sophisti-cated amplifier and laser topologies including active and passive components, signal monitors, control elements and feedback loops can be defined by the user. The general optimization capabilities can be combined with specialized heuristic and deterministic algorithms. Virtual instru-mentation provides versatile means to characterize the designed equipment.
Benefits
Design fiber-based lasers, amplifiers and optical signal-processing schemes
Modulate ultrafast phenomena in optical fibers Professional simulation environment with powerful
optimization and automation capabilities Identify the impact of different physical effects in your
designs Reduce the need for physical experimentation in the lab Increase productivity of R&D work by identifying critical
parameters and design flaws Improve communication between members of
collaborative projects & through the supply chain
Design of Fiber Amplifiers & Lasers
FiberOptics
New Features Improved Capabilities
Photonic Design Automation
VPIphotonics Design Suite™ embeds expert knowledge in one shared, flexible software environment to support require-ments in design, analysis and optimization providing you with the most powerful numerical algorithms as a profes-sional solution for Photonic Design Automation (PDA). Beside VPIcomponentMaker™Fiber Optics the suite includes:
VPItransmissionMaker™Optical Systems accelerates the design of new photonic and optoelectronic applications for short- range, access, metro and long-haul optical transmission systems. Further, it supports assessment of technology upgrade and component substitution strategies that are to be developed for existing network plants.
VPIcomponentMaker™Photonic Circuits is a simulation and design environment for photonic integrated circuits (PICs). It provides advanced device libraries integrated with a scal-able time-and-frequency-domain simulation framework for fast and accurate modeling of large-scale PICs with a mix of photonic, electrical and optoelectronic devices.
VPIlabExpert™ provides great potential for reducing efforts in the lab by applying ready-to-use advanced functionalities and virtualizing lab equipment through emulation of optical and electrical components. It addresses the specific require-ments of experimentalists for data pre- & post-processing and signal analysis functions for optical communications.
Applications
• Design and optimize lasers and amplifiers based on doped and undoped fibers
• Prototype power boosters, in-line amplifiers and preamplifiers in C-, L- and S-bands for telecommunications
• Develop high-power large-mode-area cladding-pumped fiber lasers and amplifiers
• Investigate different design concepts for multimode doped fiber amplifiers in SDM applications
• Study and optimize diverse multistage, multiband and multipass amplifier designs
• Perform spectral gain flattening with gain equalization filters (GEF)
• Suppress power transients by dynamic electrical or optical gain control schemes
• Minimize differential modal gain by optimizing fiber design and pump configuration
• Design co-doped waveguide amplifiers from waveguide dimensions upwards
• Assess implementation options for Raman amplifiers and lasers
• Investigate and optimize bidirectional Raman multi-pump configurations
• Develop cascaded Raman amplifiers and lasers with higher-order pumping
• Realize phase-sensitive and phase-insensitive parametric fiber amplifiers
• Study implementation options for continuous-wave and Q-switched pulsed fiber lasers
• Investigate implementation options and behavior of active and passive mode-locking schemes in fiber lasers
• Generate and propagate ultrashort pulses in nonlinear dispersive fibers
• Study applications based on soliton effects• Investigate physical processes leading to
super-continuum generation• Perform optical signal processing based on nonlinear
effects in fibers
FiberOptics
Features
Signal models
• Full-wave and parameterized signal and noise models supporting a single and multiple spatial fiber modes
Doped Fibers
• Steady-state and dynamic Er/Yb/Tm-doped fiber models • Embedded single- and multimode-capable mode solver • Single- and multimode propagation models spatially
resolved in transversal and longitudinal directions, fast overlap approximation-based models
• Core- and cladding, single- and multimode pumping in normal, few-mode, and large-mode-area fibers
• Giles and cross-sections fiber parameters • Conversion to a rapid blackbox model • Spectral-Hole Burning, Concentration Quenching,
Excited State Absorption • Rayleigh backscattering and background loss • State of polarization for ASE and signals • Temperature dependence of amplifier gain• Kerr Nonlinearity
Undoped Fibers
• Linear effects: chromatic dispersion, PMD, and Rayleigh scattering
• Nonlinear effects: Kerr nonlinearity, Raman, and Brillouin scattering
• Polarization-averaged and polarization-resolved modeling options
• Bidirectional signal/pump/noise propagation in multiple fiber spans
• Fiber splices defined by OTDR data or fiber parameters • Multidimensional constrained optimization of Raman
pump wavelengths and powers
Specialist instrumentation
• Test sets for measuring gain, noise and power characteristics of amplifiers
• Post-processing and visualization of signals in time and frequency domain, including waveforms, phase and magnitude characteristics, polarization properties, filtering, fitting, etc.
Two-Stage EDFA
Mode-Locked Laser
Raman Amplifier
Parametric AmplifierMultimode EDFA
Er-doped FMF
980 nm
1550 nm
LP01 LP11
LP21a LP21b
980 nm
Multimode EDFA
Design Examples
Multimode Doped-Fiber Amplifiers for SDM
VPIcomponentMaker Fiber Optics allows you to investigate different options for designing multimode EDFAs for SDM applications. Optimization of the refractive index and doping profiles, as well as the choice of modes for pumping can minimize the differential modal gain (DMG), while preserving high gain and low noise. Here, the fundamental LP01 signal mode has a larger overlap with the doping distribution than higher-order signal modes. The result-ing DMG can be partially compensated by choosing higher-order modes for pumping.
Single-Mode Doped-Fiber Amplifiers
VPIcomponentMaker Fiber Optics can be used to design and optimize multistage Er-, Yb-, Tm-, or co-doped, cladding- or core-pumped amplifiers. Include the impact of ESA, SHB, temperature dependence, concentration quenching, Kerr nonlinearities, Rayleigh scattering, and fiber-end loss/reflections on gain and noise characteristics in the design. Investigate and suppress power transients at the amplifier output by applying dynamic gain/power controls. The models can be dropped into systems simulations without modification, or abstracted to blackbox models.
Multipump Raman Amplifiers
A sophisticated fiber model for designing Raman amplifiers is provided that supports full bidirectional interactions between the pumps, noise and signals, reflections and scattering along the fiber length. Characteristics of installed links can be imported from OTDR files. A robust optimizer is provided for finding the optimum Raman pump wavelengths and powers that achieve the best fit to the amplification goal. The goal can be specified as frequency- dependent gain or output power profile taking various optimization constraints into account.
Design Examples
High-Power Fiber Lasers
High-power fiber lasers with output powers above one kW can be built using cladding-pumped large-core Yb-doped fibers (YDF) and FBG-based reflectors, for instance. The laser radiation builds up from the ASE noise and is formed by the gain spectrum of the YDF. VPIcomponentMaker Fiber Optics offers a specialist model for accurate simulation, design and optimization of doped or co-doped fiber devices with various active dopants. Double cladding is sup-ported by wavelength-dependent overlap factors for signals and pumps.
Mode-Locked Fiber Lasers
Short optical pulses can be generated using the Active Mode Locking (AML) of fiber lasers. In this example the Er-doped fiber compen-sates for the cavity loss, while ASE acts as a seed for the build-up of laser radiation. The Mach-Zehnder Modulator (MZM) together with the broadband Fabry-Perot filter provides a pulse-shaping mechanism. Full-wave simulations with VPIcomponentMaker Fiber Optics can be used to investigate how the modulation char-acteristics affect the waveform and spectrum of ultrashort pulses, radiation build-up and relaxation oscillation.
Training & Design Services
Training courses are conducted on site, or at VPIphotonics‘locations in the USA and Germany. A training manual and certificate of completion is awarded to all successful participants. Courses can be tailored to meet individual demands, ranging from beginners to advanced-level participants and addressing general or highly specialized applications.
Additionally, VPIphotonics offers customized modeling and design services in various fields of photonics and optical communications.
Please contact us and tell us about your design challenges and project requirements. Our experts will get back to you.
© Copyright VPIphotonics
VPIphotonics is a company of the SaM Solutions group.VPIphotonics reserves the right to change and update product specifications at any time. All trademarks are the property of their respective owners.
Protected by U.S. Patents 7451069, 7233962 & 6771873.Document Part Number: TC0-DS03-17 19226
Design Examples
High-Power Fiber Lasers
High-power fiber lasers with output powers above one kW can be built using cladding-pumped large-core Yb-doped fibers (YDF) and FBG-based reflectors, for instance. The laser radiation builds up from the ASE noise and is formed by the gain spectrum of the YDF. VPIcomponentMaker Fiber Optics offers a specialist model for accurate simulation, design and optimization of doped or codoped fiber devices with various active dopants. Double cladding is supported by wavelength-dependent overlap factors for signals and pumps.
Mode-Locked Fiber Lasers
Short optical pulses can be generated using the Active Mode Locking (AML) of fiber lasers. In this example, the Er-doped fiber compen-sates for the cavity loss, while ASE acts as a seed for the buildup of laser radiation. The Mach-Zehnder Modulator (MZM) together with the broadband Fabry-Perot filter provides a pulse-shaping mechanism. Full-wave simulations with VPIcomponentMaker Fiber Optics can be used to investigate how the modulation char-acteristics affect the waveform and spectrum of ultrashort pulses, radiation build-up, and relaxation oscillation.
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AmericasVPIphotonics, Inc.1 Edgewater Drive, Suite 108Norwood, MA 02062USA
Phone +1 781 7623901
EMEA & APACVPIphotonics GmbHCarnotstr. 610587 BerlinGermany
Phone +49 30 398 058 0
Our network of distributors and regional representatives delivers sales and support services for VPIphotonics in China, India, Japan, Korea, and other countries. Contact us for details.
VPIcomponentMaker™Fiber Optics is an R&D tool for model-ing, optimization, and design of single-mode and multimode fiber-based optical devices such as doped-fiber, Raman and parametric amplifiers, CW and pulsed optical fiber sources, multimode amplifiers for SDM, optical signal processing for telecommunication, high-power and ultrafast applications.
The signal and noise models based on single- and multi-mode, full-wave and parameterized representations are ideally suited for efficient analysis. The stationary and dynamic Er/Yb/Tm- or codoped fiber and waveguide models calculate the fiber modes and simulate signal amplification, noise generation, and higher-order limiting effects in configurations with single-mode or multimode signals and pumps, core- or cladding pumping at single
or multiple wavelengths. The undoped fiber model simu-lates linear and nonlinear optical effects due to chromatic dispersion and PMD, Kerr nonlinearity, Raman, Brillouin and Rayleigh scattering.
Based on elementary building blocks, simple and sophisti-cated amplifier and laser topologies including active and passive components, signal monitors, control elements and feedback loops can be defined by the user. The general optimization capabilities can be combined with specialized heuristic and deterministic algorithms. Virtual instru-mentation provides versatile means to characterize the designed equipment.
Benefits
Design fiber-based lasers, amplifiers and optical signal-processing schemes
Modulate ultrafast phenomena in optical fibers Professional simulation environment with powerful
optimization and automation capabilities Identify the impact of different physical effects in your
designs Reduce the need for physical experimentation in the lab Increase productivity of R&D work by identifying critical
parameters and design flaws Improve communication between members of
collaborative projects & through the supply chain
Design of Fiber Amplifiers & Lasers
FiberOptics
New Features Improved Capabilities
