Fiber Optics is the Ideal Way in Today’s and Future’s Application

As we see, fiber optic transmission has already been the efficient way to transmit a wireless signal and RF signal. Compared to coaxial cable, fiber optic cables has the advantages such as lower signal loss and lower weight, except this, it is also cheaper than coaxial cable. Only by these reasons, fiber optics play an important role in wireless networks. Next we will introduce several fiber optic product in different application for you.

Fiber Optic Transmitter and Receiver

The function of fiber optic transmitter, optical transmitter with AWG see at the figure, is transmitting the RF signal into an optical signal in 1.3μm, the input impedance of the fiber optic transmitter is 50Ω and the output is an optical signal whose brightness is synchronized with the RF voltage. An optical detector internal to the laser transmitter is used to monitor the output power and adjust the bias current of the laser to maintain a constant average optical output. It maintains the consistency in performance, the best linearity and the longest life of the system.

optical transmitter with AGC

Fiber optic receiver use a high speed detector and for transmitting the optical signal to RF signal. It is usually used with fiber optic transmitter. Low noise linear gain stages boost the signal back up to the desired RF level. Our Fiberstore‘s all fiber optic receivers overtake consistent tests and keep stable and long-term performances.

Fiber Optic Cables and Fiber Optic Connectors

Well, based on the special characteristic of RF in fiber optic applications, single mode fiber cable is the choice for it. The fiber has a core and cladding size of 9/125μm, and the fiber optic connector mainly for the stability and coupling of the light. But in the RF/fiber optic system, angle polished connectors are used more often, such as APC, UPC. Due to them, they can reduce the optical reflections at the connector. At the same time, we need to know that reflection in the system can cause increased noise, dirt and so on, then the connector will cause higher connector loss but also reflections. So the connector need to keep clean, the right way to keep clean is that using 99% alcohol and lint free wipes, always replace the cap on the ferrule when the connector is not in use.


In Building public safety, Fiberstore’s technology and Bidi fiber optic transceiver deliver the signal across the fiber optic network for in-building signal distribution. The benefits of fiber optics are endless. Fiberstore’s modular devices transmit RF signal in fiber easily and they keep distortion-free communications in the building of emergency, fire and police radio RF systems. Facing with the system capacity and improving the reliability of the network. Fiberstore is toward the direction of lower telecommunication cost, safe and reliable for users.

In military aspect, Today’s global battlefields are sophisticated networks of Army, Navy, Coast Guard and Air Force defense organizations requiring robust, they need monitoring and tracking, as well as high quality voice, video and data communications, as for this requirements, Fiberstore RF solution unmatched performance for radio frequency transport applications ranging from low frequency through VHF, UHF to satellite-band transmissions. Fiber optic cables provide the highest performances for soldier’s safety in military applications. The figure shows the special connector that can be used in the military application. We are very strict with the design and quality of fiber optic connector.

fiber optic connector

With the developments of the Internet, wireless LAN technology and protocols such as IEEE 802.11, Fiberstore;s fiber optic transceiver technology provides flexibility in architecture design, extended radio frequency coverage and enhanced performance in the wireless spectrum, and provide higher ability for wireless users. Fiberstore is doing his best for faster and more reliable communications solutions.

Another Point of Thought about Fiber Optics Which Take WDM as an Example

We usually defined unfamiliar things as mystical, or difficult to understand but must be associated with the creation of that which is not familiar and already understood. In fact, I think that the familiar thing or regular thing you often do it. Maybe you do not really understand it completely. You just know what you need it to do. For example, when you go up early to work and ready to go to have a shower, Do you know all the things that had to happen for that hot water to come out of the shower? Possiblely not, you just know that once you turn on the switch, you will have a warm shower. Have a think of all the happened things in a normal day, you may not have second though because they are so familiar. Turn on the light, Watch TV, have a call, send an email and so on.

This always makes me think about that when a new technology is brought in the daily life, we always keep evasive attitude towards it, and the improvements of benefits and so many converiences it brings to our daily life. Well, I set the fiber optics product as an example. WDM, wavelength division. Related product: 8 channel cwdm multiplexer. See the figure. They have a similar feature is that people all used it but they are not aware that they are. Well, if you ask me about what the optical wavelength division multiplexing is, I will be glad to tell you the answer in a special way.


While in the copper cabling, if you want to get multiple signals on the same cable, it needs various of technical phenomena and acronyms which you may think it too boring. Such as ASK, CPFSK, DTMF, FSK, MFSK, OFDM and others. In fact, it just used in the old common telephone.

white light

While in the optical wavelength division multiplexing, it likes this. When go out and see the bright sunny day, the light from the Sun is basically white color. However, you take that light and shine it through a triangular glass prism and voila, you are presented with a rainbow of different colors! Well, those colors that are visible to us. We all know scientists divided it as Red, Orange, Yellow, Green, Violet, Indigo and Blue.  Like the figure. As you can see, visible light is actually just a sliver of the total light spectrum. In fiber optics, we use the light at the near infrared side starting at 850nm all the way out to the far infrared side around 1620nm. Each color is related to its particular wavelength. For example, the color green has a wavelength between 495nm – 570nm in the visible spectrum. So, in its simplest form of optical fiber, we take an electrical signal and convert it to a wavelength of light. Then we combine several different wavelengths (multiplexing), each carrying its own signal and transfer it over a glass fiber which so small as a human hair. After you form a habit that understands a technology from a familiar thing which you use it everyday, you will find many differences and more interests in your common life.