NeoPhotonics unveils mode coupling receiver for more efficient FTTH
Week News Abstract For Fiber Series in 10GTEK
The abstract is mainly about the optical communication related products,including: SFP,QSFP,FTTH,GPON,EPON,SFPPLC,PTN,ODN,Sfp Transceiver,Optic Transceiver,Optical module,Optical devices,optical communications,Optical transceiver module,Etc.
NeoPhotonics unveils mode coupling receiver for more efficient FTTH
NeoPhotonics Corp. (NYSE: NPTN) has announced a multiport Mode Coupling Receiver (MCR) optical line terminal (OLT) transceiver. The SFP optical transceiver is designed to enable operators to maximize the split ratios of GPON fiber-to-the-home (FTTH) networks.MCR transceivers increase the split ratio individual OLT ports can support. The new GPON MCR transceiver, the first in what is likely to be a family of MCR modules, is a four-port MCR GPON Class B+ OLT in a pluggable SFP form factor that can increase the split ratio in a standard PON from 1:32 to 1:128 while maintaining the original link budget and reach. This ability helps operators minimize costs, particularly when GPON FTTH networks are newly installed and customers are just beginning to be added.The module features a connector with four fiber outputs. Each fiber corresponds to the output of a conventional GPON OLT SFP compliant with ITU-T 984 standards.As explained in an article in the September/October 2012 issue of Lightwave, the MCR concept has been around for some time. However, previous versions of this technology, based on bulk optics, were too cumbersome and expensive for commercial deployment. The use of NeoPhotonics’ photonic integrated circuit (PIC) technology instead of bulk optics for the transceiver offers a more economically feasible approach compatible with existing OLTs, NeoPhotonics asserts. British Telecom and NeoPhotonics are scheduled to present a joint paper on the MCR GPON OLT Tuesday of this week at ECOC.
Tektronix offers 28.6-Gbps BERTScope for IEEE 802.3ba, 32G Fibre Channel test
Tektronix Inc. has expanded the capabilities of its BERTScope Bit Error Rate Tester Series. The new Tektronix BSA286C BERTScope bit error rate tester offers standards-compliant testing up to 28.6 Gbps, including error detection, pattern generation, and clock recovery. The new offering should find use in the lab for both 100-Gigabit Ethernet testing to IEEE 802.3ba as well as 32G Fibre Channel applications.The BSA286C BERTScope features what Tektronix asserts is an industry-leading sub-300-femtosecond intrinsic jitter noise floor. The instrument will support both BER test and root-cause PHY layer analysis.Tektronix says that engineers can use the BSA286C in debugging applications to perform true jitter measurements on a variety of signals including low probability events, with the added ability to accurately decompose jitter into its random and deterministic components. In addition, the BSA286C shares with other Tektronix instruments a jitter decomposition model that separates bounded uncorrelated jitter (BUJ) for investigation into potential design problems related to crosstalk.The instrument also was designed to support long PRBS31 strings as a continuous pattern, which obviates the need to use PRBS15 in a loopback configuration.The BSA286C can be paired with the CR286A 28.6G Clock Recovery Module for a complete test setup, including an accurate “Golden PLL.”“For 100G testing, PHY layer qualification at full data rate is crucial, especially as the field moves into more complex modulation formats,” said Michael Hochberg, director of the OpSIS silicon photonic prototyping service and a faculty member at the University of Delaware and at National University of Singapore, via a Tektronix press release. “One of the key challenges in this field is the complexity of test setup and creating a validation methodology; we've used BERTScopes in my lab and these systems are remarkably easy to use while providing very accurate BER and jitter measurement results.”The BERTScope BSA286C is available for ordering now with prices starting at $347,000 MSRP for the new models. In addition, owners of Tektronix BSA260C BERTScopes can have Tektronix upgrade their instruments to the BSA286C configuration. Deliveries of new systems will begin in the fourth quarter of this year.
VPI previews Version 9.0 of its photonic design tool suite
Optical design software specialist VPIphotonics has issued a major upgrade to its photonic components and systems design suite. The company is giving visitors to ECOC 2012 a live preview of Version 9.0 of its software, showing off the new modeling features and design advances.Version 9.0 of the design suite, VPItransmissionMaker and VPIcomponentMaker, comes with a new Photonic Design Environment (PDE). The PDE is an improved user interface that enhances usability, offering personalized layout and display, as well as many other advances that simplify the design process, says VPIphotonics. Meanwhile, VPItransmissionMaker Optical Systems includes the brand new Constellation Analysis Tool (CAT), which simplifies the design and optimization of transmission systems with data rates beyond 100 Gbps. The tool models adaptive modulation formats using arbitrary IQ constellations. While optimizing symbol positions and decision thresholds, the user can investigate the performance of each symbol individually and compare it to the performance of the overall data stream. Enhanced OFDM modeling now accounts for arbitrary power loading, different encoding and performance estimation of individual subcarriers, and inclusion of customizable digital signal processing (DSP) functions. Multiple general purpose units can be used simultaneously to reduce simulation time of transmission fiber in long-haul and high-capacity systems. And finally, the speed of Monte-Carlo based bit-error rate (BER) calculations for mQAM/mPSK-type modulated signals has been increased, and the modeling support for applications such as parametric amplification, optical interconnects, and optical access technologies improved.In VPIcomponentMaker Photonic Circuits, users benefit from new bidirectional models representing various passive and polarization-sensitive functions in photonic integrated circuits (PICs). Additionally, users can build their own PIC sub-elements with a customizable number of ports and transfer characteristics using the new PIC co-simulation environment. The drastically reduced demand on memory and simulation time of the SMATRX domain allows large-scale PICs with several hundreds of sub-elements to be easily designed, geometrical tolerances analyzed, and the performance optimized. Furthermore, the modeling of gain gratings and interface reflections in multi-section active devices has been enhanced. Nonlinearities due to Kerr and two-photon absorption can be taken into account now. Higher order voltage-dependent characteristics of EAM sections are also considered.Finally, the scope of VPIcomponentMaker Optical Amplifiers has been enhanced to support the analysis of dynamic EDFA characteristics and design of corresponding optical or electronic control circuits.Version 9.0 of the VPIphotonics modeling suite will be available for public release in October 2012.
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