How to choose fiber optic attenuator provider?
Influencing factors of fiber optic attenuator supplier selection, Suppliers belong to an open system of supply chain, so the selection of suppliers will also be affected by various economic, political and other factors.
Quality is the foundation of the supply chain. The use value of a product is based on the quality of the product. It determines the quality of the final consumer product and affects the market competitiveness and market share of the product. Therefore, quality is an important factor in choosing a supplier.
Low prices mean that companies can reduce their production and operation costs, and have an obvious effect on improving their competitiveness and increasing profits. They are an important factor in selecting suppliers. However, the supplier with the lowest price is not necessarily the most suitable, and many factors such as product quality, delivery time, and transportation costs need to be considered.
On-time delivery factors
Whether the products can be shipped on time at the agreed time and place will directly affect the continuity of the company's production and supply activities. It will also affect the inventory levels of all levels of the supply chain, and then affect the company's response speed to the market, interrupting the production plan of the manufacturer and the sales plan of the seller.
Variety flexibility factors
In order to survive and develop in fierce competition, the products produced by enterprises must be diversified to meet the needs of consumers and achieve the purpose of occupying the market and obtaining profits. The diversification of products is based on the flexibility of the supplier's variety, which determines the types of consumer products.
Other influencing factors
Including design capabilities, special process capabilities, overall service levels, project management capabilities and other factors.
How much does fiber optic attenuator cost?
The main material of fiber optic attenuator including closure, dust cap, sleeve and attenuator fiber, so these 4 material cost combine the cost of attenuator.
Closure: the cost of metal type is higher than plastic type, normally the cost of metal closure is 0.05usd and plastic closure is 0.02usd per set.
Dust cap: All of dust caps are made by plastic material, but the price between transparent, green and black are different, transparent caps are in highest price(0.02usd), second is green(0.01USD), black one is cheapest(0.005USD)
Sleeve: there are ceramics and copper ones, copper are used very less right now, ceramics sleeve become more and more popular, ceramics sleeve price is 0.0.2usd.
Attenuator fiber is the most cost component, the price can be 0.1usd to 0.3usd depends on different types of attenuators.
So the total cost of one attenuator will be around 0.2~1usd.
How to use fiber optic attenuator?
- Use a power meter to measure the optical output power of the fiber transmitter. Remember that industry standards define the optical input power of transmitters and receivers for specific network standards. If you are testing a 100BASE-FX transceiver, you should use a 100BASE-FX transmitter, and the optical output power of the transmitter should be within the range specified in the manufacturer's data sheet.
- Connect the transmitter to the receiver and verify that it is working properly under the maximum optical output power that the transmitter can provide. You need to test the receiver with the minimum optical input power that the receiver can accept, while the receiver still provides the best performance. For this, you need to obtain the lowest optical input power value from the manufacturer's data sheet.
- Calculate the attenuation level required for the test. For example: the optical output power of the transmitter is -17 dBm, and the minimum optical power level of the receiver is -33 dBm. The difference between them is 16 dB. You can use a 16 dB bulkhead attenuator at the input of the receiver and retest the receiver. If the receiver can still work normally, it is within the specification range.
Note: The optical loss is not considered in the above example. Assuming that the transmitter is located 10 kilometers away from the receiver and the loss of the entire fiber link (including interconnection) is 6 dB, then for your test, you should use a 10 dB bulkhead attenuator instead of a 16 dB one.
(1) The fiber attenuator requires light weight, small size, high precision, good stability, easy to use, etc. Therefore, when using the fiber optic attenuator, keep the environment clean and dry, cover the protective cap when not in use, and hold it gently when moving. Handle with care and no collision.
(2) Under no circumstances can the optical fiber be directly looped to test the fiber attenuator. If necessary, the fiber optic attenuator must be connected to make the received optical power within the receiving range before the loopback test can be performed.
(3) When using long-distance optical modules, the received power must have a certain margin. The actual received power is reserved for more than 3dB compared with the receiving sensitivity. If it is not satisfied, an fiber attenuator needs to be added.
(4) Under conditions, it is recommended to use an optical power meter to test that the received and emitted power is within the normal receiving range before connecting the optical fiber to the above long-distance optical module.