DWDM
Dense Wavelength Division Multiplexing
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EDFA Amplifier
A line of Gain Flattening Erbium-Doped Fiber Amplifiers are designed for in-line amplification of DWDM networks. When a standard EDFA is used to amplify multi-channel DWDM signals, the output power level of various channels will vary according to the gain profile of the erbium fiber. This gain variation can be as great as 6 dB in magnitude. The EDFA-GB-R is unique in its dual-stage amplification and internal Gain Flattening Filter (GFF) to compensate the erbium fiber gain variation.
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Compact & Robust Tunable Laser
WSL-110
Designed for use in fiber optic transmission testing, our WSL-110 can also be used for DWDM component evaluation and coherent communications testing. The WSL-110 features grid tuning and gridless tuning options, allowing any wavelength to be accessed.
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Standard Optical Interleaver
An innovative technique for expanding the number of channels per fiber involves an optical device, called an optical interleaver. For example, in most DWDM equipment, the standard channel spacing is 100 GHz. But spacing the signal-carrying frequencies every 50 or even 25 GHz can double or even quadruple the number of channels per fiber. This job is accomplished by an optical interleaver. Such a device takes two multiplexed signals with 100-GHz spacing and interleaves them, creating a DWDM signal with channels spaced 50 GHz apart. The process can be repeated, creating even denser composite signals with 25-GHz or 12.5-GHz spacing. The signals at the receiving end are recovered with the same devices used as splitters or optical de-interleavers. Thus, devices and/or networks can be upgraded without requiring that all devices be upgraded, or network bandwidth can be increased.
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Fixed Laser Source Module
Keysight offers a broad choice of fixed laser sources, which are available as single-wavelength and dual-wavelength modules as part of the Keysight Lightwave Solution Platform. The Keysight 8165xA Fabry-Perot laser sources can be used in conjunction with optical power meter modules for insertion loss, optical return loss and PDL measurement of broadband components and fiber. The Keysight 81663A Distributed Feedback Laser Sources are best suited for amplifier test and WDM system test applications. Keysight covers PON and common WDM wavelengths with its 81663A Distributed Feedback (DFB) laser source modules. The precise tunability around ITU-grid center wavelength gives you the flexibility to match test setups to the latest requirements of the DWDM-system. The fine-tuning allows to shift the center wavelength from one DWDM transmission channel to the adjacent channel in dense WDM systems. The built-in isolator ensures highest laser stability, even when reflections are present in the optical path.
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Module Type Amplifiers
Optical amplifier Gain Blocks are compact in size and suitable for built-in use. FiberLabs provides a wide wavelength range of optical amplifier Gain-Blocks over the O-, S-, C- and L-bands. These Gain Blocks can be used for B-PON system using three wavelengths of 1.31 μm, 1.49 μm, and 1.55 μm (ITU-T [compliant with G.983.3]), DWDM system and 100 GbE (IEEE 802.3ba) using the 1.3 μm band.
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C-Band / L-Band MWDM
WD1615/C, WD1516/L
Hangzhou Huatai Optic Tech. Co., Ltd.
WD1615/C, WD1516/L WDM is based on mature thin film filtering tech, with wide bandwidth, flatness, low insertion loss and high isolation. It is mainly applied to EDFA and DWDM network to achieve the combination and separation of C-Band and L-Band.
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Optical Wavelength Meter
Optoplex Optical wavelength meter (OWM) uses proprietary thin-film interference filter in conjunction with Fabry-Perot cavity technology combined with a micro-actuator and high-speed electronics. Its working principle is schematically shown below. By comparison with Optical channel monitor / Optical performance monitor, the proprietary wavelength reference unit is introduced to ensure high precision wavelength measurements. Optoplex Optical wavelength meter is the only DWDM wavelength meter capable of measuring wavelengths of multi-lasers in DWDM networks over C-band and L-band wavelength range with a high accuracy better than that the wavelength locker can provide. For example, the device can simultaneously report 80 wavelength values of 80 channels at 50 GHz channel spacing with the wavelength accuracy ± 2 GHz. DPRAM, RS-232, or USB interfaces are available and OWM can be customized to meet specific requirements.
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L-Band Separate Raman Fiber Amplifier
RFA6000
Hangzhou Huatai Optic Tech. Co., Ltd.
1. Erbium-doped Fiber Amplifier, due to the multiple cascades and the accumulation of noise caused by spontaneous emission, will reduce the system CNR greatly and thus it will limit the transmission capacity and distance of the system. Raman Fiber Amplifier (RFA) is a newly designed fiber amplifier based on Stimulated Raman Scattering (SRS) effect. It is considered as the core technology of new generation DWDM fiber over-long communication. Compared with Erbium-Doped Fiber Amplifier, Raman amplifier has the advantage of low Noise Figure (NF), wider gain bandwidth, flexible gain spectral region and stable temperature. It is the only device that can operate in 1300~1600 nm.
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C & L-Band Separate Raman Fiber Amplifier
RFA7000
Hangzhou Huatai Optic Tech. Co., Ltd.
1. Erbium-doped Fiber Amplifier, due to the multiple cascades and the accumulation of noise caused by spontaneous emission, will reduce the system CNR greatly and thus it will limit the transmission capacity and distance of the system. Raman Fiber Amplifier (RFA) is a newly designed fiber amplifier based on Stimulated Raman Scattering (SRS) effect. It is considered as the core technology of new generation DWDM fiber over-long communication. Compared with Erbium-Doped Fiber Amplifier, Raman amplifier has the advantage of low Noise Figure (NF), wider gain bandwidth, flexible gain spectral region and stable temperature. It is the only device that can operate in 1300~1600 nm.
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1310nm/1550nm Fused Biconical Taper WDM
SWD1315
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai SWD1315 single mode DWDM adopt fused bi-conical taper technical with low insertion loss, channel flatness features. Mainly used in optical network 1310nm and 1550nm combination and halve.
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950~2400MHz DVB-S 4 Ways SAT-IF & 1 Way CATV DWDM Optical Transmitter & Receiver
HDBS-5000DW
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai HDBS-5000DW series is putting C-Band ITU standard wavelength 4 SAT-IF and 1 CATV transmitter or optical receiver into a 1RU 19" standard chassis. Multiplexing 5 optic (TX) or de-multiplexing (RX) through DWDM, and transmit in one fiber. Can be used for high-quality transmission of the same satellite VL, VH, HL, HH different polarization of the 4-way SAT-IF signals and 1 way CATV signals. Installation flexibility.
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(100×130×19mm) C-Band DWDM FGA Full Function Module Fixed Gain EDFA Module
FGA4400-FM04
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai FGA4400-FM04 series is a fixed gain Full Functional EDFA module which is specifically designed for C-Band DWDM optic transmission system, accord with various communication technology requirements of 44 channels DWDM system. It adopts nowadays excellent optical performance, advanced electronic control technology and complete software functionalities. Excellent total integration electronic transient control technology ensures amplifier to achieve the locking of optimal flat gain (OFG) in large dynamic input optical power range.
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C-Band Separate Raman Fiber Amplifier
RFA5000
Hangzhou Huatai Optic Tech. Co., Ltd.
1. Erbium-doped Fiber Amplifier, due to the multiple cascades and the accumulation of noise caused by spontaneous emission, will reduce the system CNR greatly and thus it will limit the transmission capacity and distance of the system. Raman Fiber Amplifier (RFA) is a newly designed fiber amplifier based on Stimulated Raman Scattering (SRS) effect. It is considered as the core technology of new generation DWDM fiber over-long communication. Compared with Erbium-Doped Fiber Amplifier, Raman amplifier has the advantage of low Noise Figure (NF), wider gain bandwidth, flexible gain spectral region and stable temperature. It is the only device that can operate in 1300~1600 nm.
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Optical Channel Monitors
DiCon's Optical Channel Monitor is an advancedoptical subsystem, with integrated tunable optical filter, that automatically scans a DWDM network and reports the power of each channel. Network performance is monitored and reported in real time. Feedback from the Optical Channel Monitor can be used to optimize optical power levels, identify performance drift, and verify system functionality. An optional integrated optical switch allows up to 12 separate input ports to be monitored sequentially.
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Optical Spectrum Analyzer Module
NIC
DWDM network testing in the NIC.The NIC OSA 3010, OSA 3020 and OSA 3030 are Optical Spectrum Analyzer modules for the NIC Platform.
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Ethernet PHY
Macom Technology Solutions Holdings Inc.
MACOM’s portfolio of 10G/25G/40G/50G/100G Ethernet Physical Layer (PHY) devices offer unparalleled performance while maintaining high density at low cost. Integrated high-speed, high performance mixed signal I/O using advanced CMOS process nodes support a variety of optical and copper connectivity interfaces allowing the Ethernet PHY product line to span rack and cluster connectivity within the data center, wireless fronthaul, midhual and backhaul connectivity for 5G wireless infrastructure, and seamlessly extend to core networks over DWDM optical links. Advanced features such as in-service eye monitors, traffic monitoring, optical module identification and link training are just a few of the advantages that MACOM’s portfolio provides for end users to leverage for faster bring up, higher reliability and smarter networks.
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DWDM DFB Light Source (42CH)
DWOS-1000
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai DWOS-1000 seires DFB optical source is the DWDM test platform with high capability, high stability and high flexibility. It is consist of the system rack and plug-in function module. The system rack is equipped with high capability RS232 communication interface, high precision parameter display and power supply module. There are 3 types of the function module: DFB Source module, DWDM, EDFA (optional).
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Tunable Laser Source Module
Keysight's has a wide range of tunable laser sources to fit your needs for various applications. In addition to the proven 81600B tunable laser source family, Keysight recently introduced a new family of tunable laser sources - the 8160xx family. The 8160xx tunable laser sources offer the full wavelength range from 1260 nm to 1650 nm with no wavelength gaps. All 8160xx tunable laser sources are modules for the Keysight 8164B lightwave measurement system mainframe. This provides test instrumentation with maximum flexibility. Investing in the Keysight 8160xx family of tunable laser sources can realize the cost efficiency and performance required to test components for coarse and dense wavelength division multiplexing (CWDM, DWDM) and passive optical networks (PON).
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Optical Performance Monitor
Optoplex Optical performance monitor (OPM) uses proprietary thin-film interference filter technology combined with a micro-actuator and high-speed electronics. Optical performance monitor is used to measure critical information data on optical transmission signals in DWDM networks for monitoring signal dynamics, determining system functionality, identifying performance change, and providing feedback for controlling network elements so as to optimize operational performance. In particular, Optoplex Optical performance monitor can automatically scan the C-, L- or C+L-band wavelength range and precisely measure channel wavelength and power. See the following schematic diagram for OPM working principle.
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50GHz Dense Wavelength Division Multiplexer
DWDM-0500
Hangzhou Huatai Optic Tech. Co., Ltd.
DWDM series is based on mature thin film filtering technology and adopt metal sealing technology to encapsulate. It has the feature of flat channel bandwidth, flexible channel configuration, low insert loss and high isolation. The flexibility of channel configuration and modularized design make it convenient for system upgrading and expanding. All the Huatai products have no epoxy glue in optical line and can be used in high power optical communication system.
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C-Band DWDM Fixed Gain EDFA (FGA-C)
HWA4400 (With SNMP)
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai HWA4400 series is a fixed gain EDFA which is specifically designed for C-Band DWDM optic transmission system, accord with various communication technology requirements of 44 channels DWDM system. It adopts nowadays excellent optical performance, advanced electronic control technology and complete software functionalities. Excellent total integration electronic transient control technology ensures amplifier to achieve the locking of optimal flat gain (OFG) in large dynamic input optical power range.
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Multiplexers (MUX)
WDM
It is highly desirable to reduce the number of cables required to communicate between spaces on Navy ships due to increased weight, cost and maintenance concerns. To reduce weight and expense, copper-based NTDS parallel and serial type cables can be converted to fiber optic and multiplexed using Wavelength Division Multiplexing (WDM) technology. WDM technology allows for multiple fiber optic wavelengths to be combined in a single fiber and then separated back to individual fibers at the distant end. Using Coarse WDM (CWDM) which utilizes wavelengths 20nm apart ranging from 1271 nm to 1611 nm, provides for up to 18 optical wavelengths to be combined into a single fiber. Optionally Dense WDM (DWDM) can be used allowing for up to 160 optical wavelengths.
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Passive Modules
Choose from a range of multiplexer and demultiplexer modules supporting both CWDM and state-of-the-art DWDM applications.
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(100×130×19mm) C-Band DWDM Booster EDFA Module
WBA4100-FM04
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai WBA4100-FM04 series used 100 x 130 x 19mm compact package, is a digital control circuit of DWDM power amplifier function module. Products using the most excellent optical properties, electronic control technology and complete software function is most advanced, wide wavelength range, low noise, excellent gain flatness characteristics and transient characteristics. Application for C-Band 44 wave or the 88 wave of DWDM system.
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Hybrid Raman/Er-doped Fiber Amplifier
HFA5000
Hangzhou Huatai Optic Tech. Co., Ltd.
1. Erbium-doped Fiber Amplifier, due to multiple cascades and the accumulation of noise caused by spontaneous emission, will reduce the system CNR greatly and thus it will limit the transmission capacity and distance of the system. Raman Fiber Amplifier (RFA) is a newly designed fiber amplifier based on Stimulated Raman Scattering (SRS) effect. It is considered as the core technology of new generation DWDM fiber over-long communication. Compared with Erbium-Doped Fiber Amplifier, Raman amplifier has the advantage of low Noise Figure (NF), wider gain bandwidth, flexible gain spectral region and stable temperature. It is the only device that can operate in 1300~1600nm.
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C-Band DWDM VGA without Mid-Stage Access Next-Generation Variable Gain EDFA
HWA4500 (With SNMP)
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai HWA4500 series is a next-generation variable gain EDFA, which with the most excellent performance and most completes functions in the market. It adopts nowadays most excellent optical performance, most advanced electronic technology and most complete software functions. Remarkable transient suppression control technology and heat management control technology let many complicated optical functions achieved. It is the most versatile multifunction optical amplifier in the market.
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100GHz Optical Add/Drop Multiplexer
OADM-1000 (100GHz)
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai OADM-1000 100GHz optical add/drop multiplexer based on the mature thin-film filter technology, metal seal. With so much great features like low insertion loss, high isolation, wide pass band, flexible configuration and so on. This is the ideal parts for used in DWDM system Add/Drop special wavelength.
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Optical Spectrum Analyzer
S6362D
Saluki S6362D is a high-resolution, large-dynamic, high-speed, high-performance optical spectrum analyzer. It is perfect for testing 600 nm to 1700 nm optical systems, such as DWDM and optical amplifiers. It can also be used for optical active and passive device testing, such as LED, FP-LD, DFB-LD, optical transceivers and optical fibers and fiber gratings and other optical devices.
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100GHz Dense Wavelength Division Multiplexer
DWDM-1000
Hangzhou Huatai Optic Tech. Co., Ltd.
DWDM series is based on mature thin film filtering technology and adopt metal sealing technology to encapsulate. It has the feature of flat channel bandwidth, flexible channel configuration, low insert loss and high isolation. The flexibility of channel configuration and modularized design make it convenient for system upgrading and expanding. All the Huatai products have no epoxy glue in optical line and can be used in high power optical communication system.
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Compact Tunable Laser Source with Continuous Sweep Mode, 1520nm to 1630nm
81940A
Keysight's 81940A high power compact tunable lasers enables optical device characterization at high power levels and measurement of nonlinear effects. It's improves the testing of all types of optical amplifiers and other active components as well as broadband passive optical components. As single slot plug-in modules for Keysight's 8163A/B, 8164A/B and 8166A/B mainframes, they are a flexible and cost effective stimulus for single channel and DWDM test applications. Each module covers a total wavelength range of 110 nm in the C+L-band.
