TGW022-Introduction to Fiber Optic Transceiver-Zion Communication

1.2.2 Classified by Package

By fiber optic transceiver package, they are classified as QSFP28, QSFP+, CFP, CXP, SFP, SFP+, XFP,  1X9, etc.

1.3.1 Data rate

The number of bits that are conveyed or processed per second.

The main ones now are 155Mbps,1.25Gbps,10Gbps,16Gbps,25Gbps, 32Gbps, 40Gbps,100Gbps, 200Gbps and 400Gbps.

1.3.2 Transmission distance

The maximum distance over which signals can transmit.

Cat5e/Cat6 up to 100m; SMF up to 160km; MMF up to 2km.

1.3.3 Main wavelength

Central wavelength represents the wave band used for optical signal transmission.

At present, there are mainly four types wavelengths for fiber optic transceiver:

Dual fiber optic transceiver: 850 nm, 1310 nm, and 1550 nm

BiDi Single fiber optic transceiver: 1270nm, 1310nm, 1330nm ,1550nm

CWDM fiber optic transceiver: total 18 channels from 1270 to 1610nm

DWDM fiber optic transceiver: total 45 channels from 1528.77 to 1563.86nm,Usually we use C17-C61 channels to indicate.

1.3.4 Optical transmit power

Output optical power (TX power) of an optic transceiver when it is working properly. The optical TX power is the signal level leaving from that device, which should be within the transmitter power range.A simple calculation is used to determine the value of the optical power (measured in dBm)

1.3.5 Receiving sensitivity

Receiving (RX) sensitivity is the incoming signal level being received from the far end device and it should fall within the receive power range.A simple calculation is used to determine the value of the optical power (measured in dBm)

1.3.6 Fiber mode

Optical fibers are classified into single-mode (SMF) which used for long distance and multi-mode fibers (MMF) which used for short distance.

1.3.7 Connector type

The Commonly used connector types are LC connector (applicable to QSFP, SFP, SFP+ transceivers), SC connector (applicable to BIDI SFP, 1×9 transceivers),MPO connector (applicable to QSFP+ SR4 modules), RJ-45 connector (applicable to Copper-T).

1.3.8 Extinction ratio

The minimum ratio of the average optical power with signals transmitted against the average optical power without signals transmitted in complete modulation mode. The extinction ratio indicates the capability of an optical module to identify signal 0 and signal 1. This parameter is a quality indicator for fiber optic transceivers.

1.3.9 Eye diagram

In telecommunication, an eye pattern, also known as an eye diagram, is an oscilloscope display in which a digital signal from a receiver is repetitively sampled and applied to the vertical input, while the data rate is used to trigger the horizontal sweep.

1.How do I choose a right fiber optic transceiver?

With the rapid development of optical communication, more and more fiber optic transceivers are appearing in the market to meet the needs of users to achieve various transmission rates.

When choosing the right fiber optic transceiver, we need to consider the following main factors.

• What data rate do you want to transmit at?
• What is your link distance?
• What type of fiber optic cable do you want to connect to the fiber optictransceiver?
• What type of signal are you transmitting? 
• What brand and model of equipment are you using?

The main types of fiber optic transceiver for your chosing from hangzhou zion communication co.,ltd under brand “hellosignal”

2.How to find the top quality manufacturer and  supplier of fiber optic transceiver?

Fiber optic transceivers are an indispensable part of fiber optic communication networks. But most likely, the price of buying four original SFP transceivers is equivalent to the actual cost of your network switch. In some cases, buying optical transceivers can be even more expensive than buying a new network switch. Where to buy cheap transceivers and how to find a reliable supplier then becomes a key consideration for many purchasing managers. The good news is that more and more responsible suppliers, such as Zion Communications, are now using high-quality optics and ICs and tightly controlling the manufacturing process to ensure that the optical transceivers sold to match the performance of the original branded optical transceivers and are at least 80% cheaper than the optics of the branded transceivers. Now, you just need to know how to find people like us.

3.1 The concept of high quality products.

The company not only upholds the philosophy of providing customers with high-quality products but is also able to implement and enforce methods in its production.

3.2 Perfect quality inspection process

3.2.1 IQC before assembly

Incoming Quality Control (IQC) and surface mounted component inspection are significant to fiber optic transceivers before they are assembled.In terms of the fiber optic transceivers manufacturing field, the suppliers must test the optical emitting module (TOSA), optical receiving module (ROSA), and optical transmitting and receiving module (BOSA) to ensure the quality and performance of transceivers. As for the inspection of surface mounted component, it is mainly used for checking whether the Printed Circuit Board (PCB) is correct and whether there is pollution, so as to ensure the performance of the fiber optic transceivers.

3.2.2 Testing After Assembly

After the assembly of the optical module is completed, a number of parameter tests are needed to test the signals at the transmitting end (TX) and receiving ends (RX). Only when the parameters like average output optical power, extinction ratio, optical modulation amplitude (OMA), bit error rate (BER) tests, etc. are compliant to the MSA standard, the performance and the quality of modules can be justified.

3.3 Qualified by international certifications

When selecting a qualified third-party module manufacturer, their ability to provide optical transceivers that meet common industry certifications, such as ISO 9001, CE (Construction Electricity), FCC (Federal Communications Commission), and RHS (Restriction of Hazardous Substances) standards, is an important consideration.

3.4 Wholeheartedly serving customers

There are also services that are important and can be considered from the following points.

1, the ability to provide timely quotes

2, the ability to provide timely technology-related support

3, able to provide customized services (labels, etc.)

4, able to provide logistics and customs clearance, customs clearance services