Tips on Using Optical Transceivers

Optical transceiver consists of optoelectronic devices, functional circuits, and optical interfaces. The optoelectronic devices include transmit and receive parts. The transmitting part is: Inputting a certain bit rate of the electric signal is processed by an internal driver chip to drive a semiconductor laser (LD) or a light emitting diode (LED) to emit a corresponding rate of modulated optical signal, and an internal optical power automatic control circuit is provided therein. The output optical signal power remains stable. The receiving part is: After a certain code rate of the optical signal input transceiver is converted into an electrical signal by the light detecting diode. After the preamplifier outputs the corresponding rate of the electrical signal, the output signal is generally PECL level. At the same time, an alarm signal will be output after the input optical power is less than a certain value.

Today Gigalight will share with everyone some tips on using optical transceivers if you usually pay attention to the maintenance of the optical transceiver. Note that the following two points can help you reduce the loss of the optical transceiver and improve the performance of the optical transceiver.

Note One:

1. There are CMOS devices in this chip. Pay attention to prevent static electricity during transportation and use.

2. The device grounding should be good, reduce parasitic inductance.

3. As far as possible manual welding, if you need to paste, control the reflow temperature cannot exceed 205℃.

4. Do not lay copper below the optical transceiver to prevent the impedance from changing.

5. The antenna should be away from other circuits to prevent radiation efficiency becomes lower or affect the normal use of other circuits.

6. The transceiver should be placed as far away from other low-frequency circuits, digital circuits.

7. It is recommended to use magnetic beads for the isolation power of the transceiver.

Note Two:

1. Do not look directly into the optical transceiver that has been inserted into the device (whether it is a long-range or short-range optical transceiver) with naked eyes, and avoid eye burns.

2. When using a long-distance optical transceiver, the transmit optical power is generally greater than the overload optical power. Therefore, it is necessary to pay attention to the length of the optical fiber and ensure that the actual received optical power is less than the overload optical power. If the length of the optical fiber is short, use a long-range optical transceiver and use it with light attenuation. Be careful not to burn out the optical transceiver.

3. To better protect the optical transceiver from cleaning, it is recommended that you plug the dust plug when it is not in use. If the optical contact is not clean, it may affect the signal quality, it may also lead to link problems and error codes.
4. Rx/Tx, or arrow in and out directions is generally marked on the optical transceiver to facilitate identification of the transceiver. Tx at one end must be connected to Rx at the other end, otherwise the two ends cannot be linked.

Read the above notes, whether do you have a new understanding of the use of optical transceivers? It is important to be helpful to everyone and thank you for your support and attention to Gigalight. For more product details, please visit our official website.