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Nokia N93: Twist, Turn for Endless Fun

Innovative mobile phones have become such a rage among mobile phone users that every now and then, you can expect the launch of a new mobile phone with superb features. Well, among other popular mobile phone manufacturers, Nokia has earned a special place because of its consistent jest for innovation. The Nokia N93 is one of those innovative phones, which would definitely make you crave for one. Actually, Nokia N93 is another addition in the tremendously popular Nokia N series. As such, Nokia N93 has so much to offer that it has really earned a firm place for itself among other popular phones.

With Nokia phones N93, you can enjoy an excellent video experience, what you always want to have in your own mobile handset. It is loaded with a superb camera and an ultimate device, which is used for video recording. All these qualities have earned another name ‘digital camcorder’ for the Nokia N93. All the essential features are there for you with Carl Zeiss optics, 3.2-megapixel camera, 20x digital zooming and DVD-like video capturing capability.

The Nokia N93 is very well equipped to satisfy your music interests. It comes with a digital music player with a stereo sound and there is a FM player to give you enough choices. So, enjoy all your favourite music, the way you like. If there are other things, which you want to do then you can also make your own play lists to put all your favourite tracks with its hands-free speaker.

Well, when it comes to memory, the Nokia phones N93 is loaded with 50MB memory. If that is not enough for you, then you can easily add more memory by using miniSD card. This memory card is good enough to store more than 2500 high quality photos with DVD-like quality videos.

Treasure all your favourite stuff and share with your loved ones just by clicking with your Nokia 93. View all your favourite video clips with an amazing 160-degree viewing angle. Share easily by email, Bluetooth or just by blogging. Go on with the Nokia N93 and have loads of fun.

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The Story Of Legacy Fiber Optic Connectors

:: Choices of connectors

Over the years, a large variety of fiber optic connectors have been designed for most fiber optic installations. Lightwave equipment manufacturers have never standardized on any one connector type, they actually provide a selection of connectors for their equipment interface.

It is very important to choose the fiber connector type for your applications. You should maintain a connector standard throughout a fiber optic project.

:: The components of a fiber connector

For most fiber optic connectors, the major components are ferrule, connector body, connector cap and strain-relief boot.

Ferrule

The ferrule is the center part of the connector. It contains the optical fiber in a center hole. Ferrule can be made from ceramic (Zirconia), stainless steel or composite material.

Ceramic ferrule is the most popular material since it has stable temperature characteristics. The most common ceramic is Zirconia which is a white hard ceramic material. Ceramic ferrule is used for both single mode and multimode connectors. It offers the lowest insertion loss and the best repeatability.

Connector Body

Fiber optic connector body can be steel or plastic. The body design differs from connector to connector. The connector body provides the mechanism to hold the ferrule and other parts together. It also provides the locking mechanism for connector mating. The most common locking mechanisms are push-pull, snap-in, thread on and twist-on.

Connector Cap

Connector cap often has the same material as the body: either steel or plastic. The cap can be screw on, twist lock or snap-on for connector mating.

Strain-relief Boot

Strain-relief boot is the part connecting the connector body and the fiber cable. It is often made from rubber. Although it looks minimal, it is actually one of the most critical parts in a connector. It provides strain relief on the optical fiber to prevent micro-bending, breakage and provides mechanical support for fiber and connector handling.

:: Legacy Fiber Connector Types

The following list shows the legacy connector types that have been deployed in numerous fiber optic networks for many years.

ST Connector

ST connector was once the most popular fiber connector. It was well-liked for both single mode and multimode fiber connections. The average insertion loss for a ST connector is about 0.5dB.

ST connector has a twist-on locking mechanism which is not susceptible to loosening in vibrating environment. It is most often used in LAN networks.

FC Connector

FC connector is popular for single mode applications. It has the lowest insertion loss and the best repeatability. It has a thread-on locking mechanism.

SMA connector

SMA connector is a pretty old connector type which is mostly used for multimode applications. Today it is still being using on medical equipment.

There are two types of SMA connectors on the market: SMA 905 and SMA 906. The only difference between them is that SMA 906 has a straight ferrule while SMA 905 has a step-down ferrule.

D4 Connector

The NEC D4 was probably the first connector to use ceramic or hybrid ceramic/stainless steel ferrules. It uses a smaller ferrule than SCs or FCs. It was widely used in telco networks in the 80s to early 90s and some may still be in use.

FDDI connector

Besides the SC Duplex, you may occasionally see the FDDI duplex connectors which mate to their specific networks. They are generally used to connect to the equipment from a wall outlet, but the rest of the network will have ST or SC connectors. Since they both use 2.5 mm ferrules, they can be mated to SC or ST connectors with adapters.

Biconic Connector

Biconic connector's yellow body indicating a SM version - mutlimode versions were usually black. Biconic connector was developed by a team led by Jack Cook at Bell Labs in Murray Hill, NJ.

About the Author

Colin Yao is an expert on fiber optic networking technologies and products. Learn more about
bulk single mode fiber
,
corning fiber optic cable
,
outdoor single mode fiber
on Fiber Optics For Sale Co. web site.