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Fiber Optic Adapters – the Bridge between Fiber optic Connectors

by www.fiber-mart.com

Definition of Fiber Optic Adapter

Fiber optic adapter is a device used to connect two fiber optic connectors in the fiber optic cabling system. It seems like a bridge to connect the gap between two same styles connectors, even the different connectors. Due to its fuction, there is a specific situations of fiber optic adapter. If two fiber assemblies to be connected have the same style fiber connectors, it is called coupler. If the two fiber assemblies to be connected have different style connectors then we always call adapter. We can see an example in the following picture. The adapter connected ST connector to ST connector, both sides are the same style, in this time, we call coupler. Otherwise, we call adapter.

adapter-and-coupler

 

Types of Fiber Optic Adapter

According to the diversity of the fiber optic connectors, there are many types of fiber optic adapters. Adapters are available to join like connectors SC-to-SC, ST-to-ST, or FC-to-FC–and different styles of connectors. The latter devices are called hybrid adapters and are used, for instance, to join ST and SC connectors. We can see the following pictures to know more about different types of fiber optic adapters.

fiber-optic-adapter

How do Fiber Optic Adapters work?

As we known, the key to a fiber connection is the precise alignment of each fiber core, so traditional connection method, such as the soldering is defective. Inside each fiber optic adapter, there is the alignment sleeve. The aligment sleeve is the most critical component of a fiber optic adapter. Bronze sleeves are more durable but the precision is not as good as ceramic. Ceramic ferrules offer a more precise alignment, but they are somewhat less durable. Bronze alignment sleeves are commonly used in multimode applications where precision alignment is not as critical. The performance of the adapter, defined as how well it aligns two connector ferrules, is determined by the amount of spring force in, and the tolerances of, the split sleeve. It needs a very professional technology to make it a reality.

 

alignment-sleeve

 

Fiberstore’s Fiber Optic Adapters Solutions

Fiberstore offers a variety of fiber optic adapters with types including single mode and multimode, LC, SC, ST, MU, FC, MTRJ, E2000, SMA, etc. All the fiber optic adapters have reliable performance and are on sale with good discount. We also welcome any inquiry for customized adapters.

How to Use Optical Power Meter

by www.fiber-mart.com

To ensure the signal transmission quality in fiber optic network, optical power should be well controlled. Optical power should not be too high or too low. And it should be within the scope of the device’s requirement. To achieve accurate measurement, optical power meter is usually used to test the optical power. It is easy to use and can be really helpful during fiber optic network installation and maintenance.

 

Buttons on Optical Power Meter

The functions and operation of optical power meters provided by the market are similar. Generally there are four buttons on the optical power meter: power button, dBm/w button, REF button and λ button. The functions of these buttons are listed in the following:

 

Power button: turn the power meter on or off;

dBm/w button: shift between linear (mW) mode and logarithmic (dBm) mode;

REF button: press this button to set the current measured power as the referent point;

λ button: select the calibrated wavelength. The most commonly used wavelengths are 850nm, 980nm, 1310nm, and 1550nm.

 

Here takes an example of a typical handheld optical power meter (FOPM-104) which is designed by fiber-mart.COM as shown in the following picture.optical power meter

 

Adapter Type of Optical Power Meter

To use the optical power meter, a length of fiber optic patch cable is usually required to connect the optical power meter interface and the interface of devices requiring test. For instance, if the interface on the optical power meter is FC, the device for testing has a LC interface. Then a length of FC-LC fiber patch cable is needed. Some of the optical power meters have only one fixed optical interface. Some can provide replaceable optical adapter to fit different patch cables. The above mentioned FOPM-104 handheld optical power meter provides three type adapters: SC, FC and ST (as shown in the following picture).optical power meter adapter

 

For testing of fiber optic interface like LC, SC, ST and FC, this above power meter is enough. Some optical power meter might have two optical interfaces for common connectors. However, interface like MTP/MPO, optical power meter with special interface should be used. The following picture shows a MTP optical power meter provided by fiber-mart.COM, which can be used to test devices or components with MTP interfaces like 40G SR4 QSFP+ transceiver.MTP optical power meter

 

Optical Power Measurement Using Optical Power Meter

The using the optical power meter is simple. The following video will take the example of 10G-LR SFP+ Cisco compatible module to illustrate how to use an optical power meter for testing. This cisco compatible transceiver will be inserted in Cisco Nexus 9396PX switch. A length of single-mode LC-FC fiber patch cable is required. This is because 10G-LR SFP+ transceiver is a single-mode transceiver working on wavelength of 1310nm. After the optical power meter is connected to the module. Turn on the power button and press λ button to select 1310nm wavelength. At first the power value will change rapidly, then it slows down until still. The final power value will be shown on the screen.

Guide To Fiber Optic Polishing

by www.fiber-mart.com

Optical fibers require end-surface treatment for proper light propagation and that includes polishing their ends. Polishing is essential for almost all glass-based fibers with cladding diameters larger than 200 microns. Furthermore, all fiber connectors require polishing. The process of fiber optic polishing can occur in the field or in a technical lab, it employs a range of tools and products used to create precision fits and finishes in the delicate glass ends.

 

There is typical fiber optic polisher for fiber optic polishing. Fiber Optic Polishing Machines are used to polish the end faces of fiber optic products (cables, connectors, adapters, etc.) in order to minimize signal losses due to scattering. Polishing machines can increase productivity by providing rapid polishing of many different connector styles.

 

When selecting a fiber polishing machine, there are several features to consider, including adjustable pressure, changeable holders, a timer, and the ability to request custom specifications. Most polishing machines do not offer the flexibility of speed adjustment. This is partially due to the fact that most users only need to handle one type of ferrule material such as zirconia. A slight speed variation does not have significant impact on connector polish result. However, a versatile polisher should have the capability to change speed according the ferrule and polishing film material.

 

The polishing job typically involves fusion splicer, among other network crimping tool and connectors are needed. It also requires 99% isopropyl alcohol, polishing (lapping) film and pad, a polishing puck, and epoxy or adhesive. Some technicians also find needle, syringe, and piano wire useful.

 

Several Different Polish Options On Fiber Connectors

 

The different polish of the fiber optic connector ferrules result in different performance of them, mainly on the back reflection (return loss). Generally, PC type is required at least 40dB return loss or higher, UPC is 50dB or higher, APC is 60dB or higher. (As we know, the higher the return loss, the better the performance). Insertion loss of them all should be less than at least 0.3dB, the lower the insertion loss the better the performance.

 

Things You Need To Mind During Fiber Optic Polishing

 

It is important not to dwell on any polishing film longer than necessary. Too much polishing can result in undesirable ferrule length, unnecessary polish film wear, and degraded polish finish due to particle accumulation. Make proper adjustments to the recommended polishing time in each step in case they are less than ideal.

 

Eye protection is always necessary to protect against powerful industrial lasers used in long-distance single-mode networks. Supporting tools may include a visual fault locater to troubleshoot fiber faults and breaks. A fiber-optic inspection microscope permits precision analysis of hair-fine fibers. Additionally, technicians rely upon jacket strippers, cutters, cable slitters, and fusion splicers.

 

Conclusion

 

Fiber polishing is a science but much like an art. The science of polishing is crystallized in a well designed machine while the art of polishing reside in the procedure and the continuous effort for improvement by the individual user. The procedure and the training are just as valuable as the polishing machine.

JUMPERS: PICK THE RIGHT PATCH CORD FOR YOUR FIBER OPTIC NETWORK

by www.fiber-mart.com

A fiber jumper—more commonly called a fiber patch cord—is a length of fiber cable that connects end devices or network hardware to your structured cabling system. The cable is terminated with LC, SC, MTRJ or ST connectors at each end.

 

Jumpers come in simplex or duplex and should be chosen based on your network needs. Figuring that part out is as easy as knowing the difference between its and it's when you're writing blog posts.

 

SIMPLEX VS DUPLEX JUMPERS

Simplex cables, a single strand of glass encased in plastic, are generally used when a data transmission needs to travel in only one direction. They're a great choice for connections within buildings or across large areas like cable TV networks.

 

Duplex cables, two strands of fiber in a single cable, are like a two-lane highway. The signal needs to go both ways, called bi-directional communication, between your active gear.

 

One cable is transmitting the signal, while the other is receiving it. Duplex cables are typically used in larger work stations, switches, servers and on major networking hardware.

 

Duplex cables also come in zipcord or uniboot construction. In zipcord, two fiber strands are fused together but are easily torn apart when it's time to mine out either the transmission or receiver strand.

 

For uniboot, the two fibers merge into a single connector at either end, making replacement and maintenance a bit more difficult and costly than zipcord cables.

 

CHOOSING YOUR PATCH CORD

Single-mode simplex fiber carries only one ray of light at a time. It's extremely reliable and holds a high-carrying capacity for long-distance transmissions.

 

Since it requires less material, it's usually more cost-effective than duplex cable. It's the most commonly used cable in modern communications, because of its high capacity, allowing for higher transmission speeds and more bandwidth.

 

The risk you run is the amount of fiber you're going to have on your fiber distribution frames.

 

You know … spaghetti syndrome.

 

Duplex jumpers help keep your data center cleaner and tidier. They allow you to require less cable, and maintenance becomes a lot easier.

 

The choice between simplex and duplex jumpers really depends on your network—who it's serving and how complex it needs to be.

 

HOW TO CHOOSE FIBER OPTIC ADAPTER

by www.fiber-mart.com

s we know, fiber optic connector is an important fiber optic component used to link two fiber optic lines together. Beside connector, there is also another item, which is fiber optic adapter with panels to connecting multi fiber optic line. Specifically, the fiber optic adapter is a small device that used to terminate or link the fiber optic cables or fiber optic connectors between two fiber optic lines. In order to realize the fluent fiber optic connection, the fiber optic adapter panel shapes or types should be in accordance with the fiber optic connectors or cables. Common shapes of the adapters are square, rectangular, or round that with FC, LC, ST, SC, MTRJ types. There are also single mode and multimode fiber optic adapters or single mode and multimode fiber optic connections. So when purchasing fiber optic adapters for fiber connections, it is essential to choose the right fiber optic adapter according to the fiber optic connector or fiber optic cables.

 

Standard or flange fiber optic adapter is a typical type used to connect the same types of optical connector, there are SC, ST, LC and MTRJ type available for choosing. These adapters are comprised of two or more female connections that fiber optic cables can be plugged into. flange fiber optic adapters are typically with ceramic sleeves, fitting for both single mode and multimode fiber optic connections.

 

Hybrid fiber optic adapters are another type used to link two different kinds of fiber connectors or cable assemblies. For example, LC to SC hybrid adapter, it can link LC connector at one side and SC connector at the other side. Hybrid fiber adapters can be also used for single mode and multimode fiber optic connections with PC or APC sleeves, in simplex and duplex style. Hybrid fiber adapters use high precision ceramic sleeves because it can provide reliable ferrule mating and ensure low insertion loss and return loss during the connecting. This type of optical fiber adapters is with compact sized and widely used for network environments integrating different configurations and telecommunications networks.

 

Bare fiber adapter is structured with optic fibers on one side and the adapter on the other side. It is used to link the bare optical fiber cable to fiber optic equipments. The adapter side is a connector that can plug into the equipment and enable a quick and easy termination for the optic fiber. Because this feature of the bare fiber adapters, they are widely used for emergency situation for fast and temporary fiber optic or urgent connection, testing bare fiber, fiber on the reel, fiber before and after installation and so on. SC, FC, LC, ST bare fiber adapters is now available in the market.

 

A single optical fiber adapter usually could hold a dozen of cables, if you splice multiple adapters together, it can even make hundreds or thousands of connection. Knowing what kind of connections, multimode or single mode, simplex or duplex, as well as the connector types can help you choose the corresponding right type of optical fiber adapter for application.

WHAT IS A FIBER LOOPBACK CABLE?

by www.fiber-mart.com

Fiber loopback is a media of return patch for a fiber optic signal that widely used for fiber optic testing, fiber network repair and fiber optic equipment diagnosis. Loopback test is a hardware or software method to test physical link problems of the fiber optic networks. It is realized by feeding a received signal or data back to the sender. Fiber optic loopback cables types is classified based on the fiber connector types, optic fiber modes.

 

Traditional fiber optic loopback is like a fiber optic patch cable with two fiber connectors at each end, forming a loop. Nowadays there are also another improved fiber loopbacks which called molded fiber optic loopbacks or fiber optic loopback modules. It is more compact sized and stronger. The molded loopback use an outer enclosure to protect it and from the outside you do not see the optical cables, they are more compacted size and stronger then the fiber loopback cables.

Just like the fiber patch cable, the fiber loopbacks is made up of different kinds of outer jackets, cable diameters, length or terminations that various according to customers’ special requirements.

 

Fiber Optic Loopback Applications

Fiber amplifier

Optical fiber sensor

Tester, Cable TV systems

Communications connections

 

Fiber Optic Loopback Types

Based on the optical connector types on the loopback, there are SC, LC, MTRJ, ST, FDDI etc. The most commonly used fiber optic loopbacks are SC and LC type.

According to the optic fiber mode type of the loopback cable, there are single mode 9/125 fiber optic loopbacks, 10G multimode loopback, multimode 50/125 fiber optic loopbacks and 62.5/125 fiber optic loopbacks. 10G loopback module is used in 10G multimode 50/125 Fiber Testing application. Typically single mode SC type and LC type fiber optic loopbacks are blue color, typical multimode LC and SC type fiber loop backs are beige color, this also goes with the practice of fiber optic patch cables.

 

Specifications

Connector type: SC, LC, MTRJ available

Optical fiber mode: multimode 50/125 um, multimode 62.5/125 um, single mode 9/125 um

Working wavelength: Available wavelengths are 850nm, 1310nm and 1550nm. 850nm and 1310nm are for multimode applications and 1550nm is for single mode applications.

Insertion Loss (dB) ≤ 0.2

Exchangeability ≤ 0.2 (500 cycle passed)

Temp. Range ≤ 0.2 dB ( - 40 to +80 degree centigrade)

 

Wide ranges of fiber loopback cables are available at ingellen.com, they are designed with compact size, totally complied with the industrial standard which is ideal choice for your fiber optic testing. Besides we also provide custom fiber loopback according to your required jacket types and cable diameters, length or terminations. All our products are fully tested to comply with compliant with fast ethernet, fiber channel, ATM and Gigabit Ethernet Welcome to purchase or customize fiber optic loopback cables or the connector configurations and special polished for them via ingellen.com or contact sales@ingellen.com right now!