100G DWDM Transponder/Converter

 The 100G OTN Transmitter supports one QSFP28 client interface and one CFP line-side interface to support single-channel 100Gbps large-grain data transfers. The industry’s most advanced coherent technology and FEC forward error correction coding technology enable high-capacity, long-distance high-performance transmission.

l Media conversion

l Signal repeating

l Lambda conversion

l Support single channel 100Gbps

l Client side: QSFP28 module

l Line side: CFP 100Gbps coherent module;

l Ultra-long-distance transmission: FEC technology can be used to achieve 1500km transmission without regeneration

l Large dispersion tolerance: 40000ps.nm

l Support port loopback test

l Support 80 channel wavelength tunable

HTF 100G Transponder includes integrated OTN FEC capability on the transponder, allowing operation over longer distances or in applications requiring ultra-low bit error rates.

The 100Gbps Transponders from HTF offer a choice of pluggable QSFP28 Client side optics and CFP Coherent DWDM line side optics based on distance and capacity requirements.

The Coherent DWDM Optics are the most technologically advanced and offer benefits on dispersion management, signal reach, and other optical properties. Coherent DWDM Optics can greatly increase the capacity and reach of an optical network, The 100G Transponder models fit for HT6000 Series CH04, CH08, CH20 Chassis.

If have more question, welcome to contact Ivy from HTF. ivy@htfuture.com www.htfuture.com

Things You Should Be Aware of Before Deploying an OTN Network

 If you are about to deploy an OTN network by yourself or get a customized OTN solution from solution suppliers, there are some details and requirements that you should know in advance.

How many spans do you have, and how far between each of the spans?
The specific distance your network transports will determine the fundamental equipment needed in the OTN system. Specifically, the transmission distance between each span will indicate whether the Dispersion Compensation Module (DCM) would be needed to compensate in the fiber optical link.

What’s your fiber type and the link loss (typical 0.25dB/KM)?
OTN solutions offered by solution suppliers can be tailored to both dual and single fiber types. And link loss is necessary for collocating the most appropriate optical transceivers and some active components such as EDFA amplifiers.

What’s the data rate between each span? And how many businesses do you plan to transmit?
To make clear the data rate and capacity for each span in your network are conducive to choosing the most practical types of MUX or OADM for your current OTN infrastructure. And a good acquisition of the number of businesses you are to deploy can pave the way for future network expansion.

Optical Transport Network Solutions

 Optical Transport Network Solutions

WDM MUX/DEMUX, Optical Add/Drop multiplexer (OADM), EDFA, WDM transponder/muxponder, optical line protection (OLP) card, variable optical attenuator (VOA), etc. are the products used in OTN networks. For different network requirements of every individual network task, the equipment deployed in an OTN network can be various. Following list of some common OTN-based products as well as their functions.

The following Item and Function:
WDM MUX/DEMUX Provide high-performance signal division and multiplex

OADM Add/drop the selected wavelengths in one or multiple channels
EDFA Extend the power budget over long distances
WDM Transponder/Muxponder Provide functions such as electrical and optical signals conversions and wavelength conversion/additional functionality of multiplexing

OLP Optical line protection for optical power monitoring and automatic switching
VOA Variable optical attenuator for optical power management

Five Key Benefits of OTN Network

 OTN network combines the advantages of optical transmission and electrical processing to provide end-to-end, transparent pipe connections, increased spectral efficiency, and large-capacity transmission capabilities for long-haul transmissions. The primary benefits of the OTN network are presented as follows.

Standard Hierarchy — OTN standards include a standard multiplexing hierarchy, defining exactly how the lower-rate signals ascend into the higher-rate payloads. This allows the WDM platform to shift lower-rate services within 10Gbps, 40Gbps, or 100Gbps wavelengths, without the need for external wavelength demultiplexing and manual interconnects.

Transport Capacity Expansion — OTN networks provide the underlying high-capacity infrastructure for core interoffice, metropolitan interoffice, and broadband business-access networks. Carriers deploy OTN to support the greatest number of services on the least amount of infrastructure.

Reduced Cost — With multiple clients transported on a single wavelength and their specific requirements preserved, the OTN network reduces the overall cost of transport and ensures efficient bandwidth utilization.

Transport Flexibility — Network operators can employ the technologies needed to support current transport demands, while also enabling future adoption of new technologies as business needs dictate. It can easily scale to ring networks, end-to-end networks, and mesh networks.

Timing Transparency — Timing transparency is important for offering wholesale services to third-party providers. The transparency of OTN enables the networks to carry any service, including Ethernet, storage, and digital video, as well as SONET/SDH without interfering with the client timing.

Otn

Dwdm

What Is OTN Network — Optical Transport Network?

 With the explosion of digital traffic and the ever-growing array of bandwidth-hungry applications, Optical Transport Network (OTN) evolves from point-to-point DWDM remedies to scalable and robust optical networking applications that cater to a wide variety of client signals with equally-varied service requirements. Carriers are also placing a particular emphasis on OTN in the Metro area, where it is shifted rapidly from SONET/SDH to wavelength-division multiplexing (WDM). With the goal of boosting bandwidth and increasing network functionality, OTN provides a way to support different traffic types in a more cost-effective manner than by using SONET/SDH networks.

What Is OTN Network？
Defined by the ITU Telecommunication Standardization Sector (ITU-T), OTN is a digital wrapper technology that provides an efficient and globally accepted way to multiplex different services onto optical light paths. The OTN technology or digital wrapper technology provides a network-wide framework that adds SONET/SDH-like features to WDM equipment. It creates a transparent, hierarchical network designed for use on both WDM and TDM devices. (More information about WDM and TDM systems is available in Optical Wavelength Bands Evolution.)

OTN integrates functions of transporting, multiplexing, routing, management, and supervision, and builds OTN client (e.g. SONET/SDH, IP, ATM) connections in the Metro and Core networks. Nowadays, it is widely deployed in the metro, regional, and long-haul DWDM packet-optical transport networks.

If need more information, welcome to contact HTF team, HTF team is ready and happy to assist you. ivy@htfuture.com +8618123672396

OXC vs ROADM

 ROADM can implement multi-degree large-capacity wavelength-level scheduling to meet the networking demands of backbone, metro and data center interconnection (DCI). However, as the degrees of a ROADM grow, the number of fiber connections inside the ROADM site increases dramatically, which makes the service provisioning and maintenance process time-consuming, prone to human errors and increases the footprint and power consumption. Optical cross-connect (OXC) addresses these problems by using the all-optical backplane in combination with the highly integrated optical line boards and optical add/drop boards. Since 2018, OXC has been widely used by Chinese operators.

Composition of OXC and Key Technologies

A 20-degree ROADM requires three cabinets, more than 100 boards, and 400 fibers inside the site. It occupies a large area and has high power consumption and complicated fiber connection, making service provisioning and maintenance difficult. As the number of degree increases to 32, the footprint, power consumption, and the number of fiber connections will increase dramatically, and it will be difficult to locate problems due to a large workload of service provisioning and maintenance. Compared with ROADM, OXC uses highly integrated boards and optical backplane to reduce the footprint and power consumption and simplify internal fiber connections (Fig. 1). A 20-degree OXC needs only one cabinet to reduce the footprint by 2/3 and about 30 boards to reduce the number of boards by 2/3 while also reducing the corresponding power consumption. The optical backplane connects all fibers inside the site to achieve automatic fiber connection, which improves the provisioning efficiency and reduces the maintenance costs.

An OXC is mainly composed of a optical backplane, optical line boards and optical add/drop boards, and involves key technologies like flexible optical backplane, high-density optical connector, 1×N wavelength selective switch (WSS) and M×N WSS. The optical backplane includes a flexible optical backplane and high-density connectors. The optical add/drop boards have two types: with colorless, directionless, flexgrid (CDF) capability or with colorless, directionless, contentionless and flexgrid (CDC-F) capability. The first type employs TWIN 1×N WSS and does not support contentionless functionality. It integrates the WSS and the optical amplifier, and occupies one slot. It can add/drop 32 wavelengths and schedule a service to any optical direction through the high-density connectors and fiber connections on the optical backplane. The latter type employs M×N WSS and occupies two slots. It supports contentionless add/drop of 48 wavelengths in 8/16 degrees. The optical line board highly integrates the OA, OP, OSC and OTDR function modules, and one slot corresponds to one direction. One optical line board occupies one slot and corresponds to one direction. The optical line board is connected with the optical backplane through the high-density connectors and can schedule a group of wavelengths to any optical direction or any optical add/drop board for service add/drop.

—Optical backplane: The optical backplane technology is used to convert internal fibers between optical interfaces of the ROADM board into high-density interconnected fibers on the optical backplane. Internal fibers are divided into multiple groups, deployed through the fiber cabling machine and encapsulated into a flexible plate to form a flexible optical backplane that supports non-blocking fiber connections.

—High-density connector: The optical backplane is connected with the optical line board and optical add/drop board through the high-density connector. The optical connector must have high density to ensure full interconnection of all optical boards inside the OXC site and also support blind insertion with features like high interconnection precision and reliability of multiple plugging/unplugging.

—WSS: The core components of optical add/drop boards and optical line boards are 1×N WSS and M×N WSS. The related technologies mainly include micro-electro mechanical system (MEMS) and liquid crystal on silicon (LCoS).

HTF help customer to choose the suitable solution and save cost. If need support, welcome to contact. www.htfuture.com  ivy@htfuture.com   +8618123672396

400G dwdm Muxponder

 The 400G Muxponder Transmitter supports four QSFP28 client interface and one CFP2 line-side interface to support single-channel 400Gbps large-grain data transfers. The industry's most advanced coherent technology and FEC forward error correction coding technology enable high-capacity, long-distance high-performance transmission.

l Support single-channel 200G/400G large data rate transmission

l Support 191.3~196.1THz, 75GHZ interval wavelength adjustable

l Ultra-long-distance transmission: FEC technology can be used to achieve 1000km transmission without regeneration

l Large dispersion tolerance: 20000ps.nm

l Support DCO output power adjustable

l Support port software and hardware loopback test

l Support DDM digital diagnosis, OSNR monitoring, real-time monitoring of bit error rate

l Support ALS function

HTF 400G Muxponder includes integrated OTN FEC capability on the transponder, allowing operation over longer distances or in applications requiring ultra-low bit error rates.

The 400G Muxponder from HTF offer a choice of pluggable QSFP28 Client Side Optics and CFP2 -DCO Coherent DWDM Line Side Optics based on distance and capacity requirements.

The Coherent DWDM Optics are the most technologically advanced and offer benefits on dispersion management, signal reach, and other optical properties. Coherent DWDM Optics can greatly increase the capacity and reach of an optical network, The 400G Muxponder models fits for HT6000 series CH04, CH08, CH20 chassis.

If need more information, welcome to contact HTF. www.htfuture.com skype/Wechat/Whatsapp: +8618123672396 ivy@htfuture.com