RSoft OptSim Optical Communication Design Suite version 5.3

Optimized design of existing data links and the advancement of complex future designs can only be achieved with a thorough understanding of the underlying physics and technology involved, as well as the ability to predict performance and recognize design limitations, said Chris Kocot, principal scientist, Finisar Corporation. At Finisar, simulation software is a crucial facilitator in this process. OptSim is a key component in our suite of software simulation tools used for advanced product development, including 28 Gb/s optical interconnects and next-generation optical links operating at 56 Gb/s per channel, as well as for high-speed link simulations that involve advanced modulation techniques.

Support for Cutting-Edge Modulation Formats

OptSim now includes models for accurately simulating coherent polarization-multiplexed binary phase-shift keying as well as coherent multi-level polarization-multiplexed modulation formats such as PM-16QAM and PM-64QAM. These enhancements can help speed development of advanced applications such as single-carrier 100G Ethernet. The software also supports enhanced orthogonal frequency-division multiplexing models that can handle negative frequencies and calculate error vector magnitudes. This provides engineers with increased flexibility and power when developing OFDM-based systems, such as high-speed long-haul transmission systems with high inter-symbolic interference.

Application-Specific Models Accelerate Design Development

OptSim now offers the following additions to its model library, which users can incorporate into their designs to jumpstart analysis of a wide range of systems, including photonic integrated circuits, long-reach and ultra-long-reach metro networks, and optical transport networks:

•Y-fed balanced-bridge dual-arm Mach-Zehnder modulator model
•Electrical filter synthesis based on data in Touchstone files
•Model of clipping in the electrical domain
•Phenomenological model for more easily implementing dispersion compensation

OptSim has been a useful tool, giving us the ability to assess the performance of new systems before components are available for lab testing, said Steven Searcy, optical systems engineer, ADVA Optical Networking. The ability to obtain preliminary design rules via simulation is critical to staying ahead in the development and introduction of new technologies.

Enhanced Multimode Fibre Modeling Speeds Evaluation of Optical Signal Propagation

ModeSYS includes an updated and enhanced multimode fibre model that provides faster calculation of mode-coupling equations. This can significantly accelerate evaluation of optical signal propagation in data communication systems.

Application Examples Increase User Productivity

New application notes in OptSim demonstrate state-of-the-art examples that can reduce training time for new users and increase efficiency for experienced users. Application [examples] include polarization-multiplexed modulation formats, parametric fibre amplifiers, microwave photonics and multimode systems:

•PM-QPSK modulation using an external local oscillator
•Dual carrier PM-QPSK modulation
•In-band crosstalk in partial DPSK systems
•Phase-sensitive fibre parametric amplifiers
•Microwave photonic links based on balanced detection
•DMD test and measurement per IEC specification 60793-1-49
•EMB test and measurement per IEC specification 60793-1-41
•25-Gbps directly modulated VCSEL-based multimode links

OptSim 5.3 adds modelling enhancements that strengthen its standing as an ideal tool for optical communication design and simulation, said George Bayz, vice president and general manager of the Optical Solutions Group at Synopsys. These new features are augmented by our continued focus on improving user productivity, with an expanded model library and detailed application notes. Our goal is to help engineers develop, test and deliver new systems more efficiently than ever.