How Does High-accuracy NTC chip Solve Temperature Control Challenge of Optical Transceiver?
Optical transceiver uses laser to convert electrical signals into optical signals, and the laser's emission wavelength can drift as the junction temperature changes, easily affecting communication quality. To ensure temperature management for optical transceiver, the EXSENSE gold termination NTC chip, with its high sensitivity to temperature, helps optical transceiver maintain stable working performance under complex operating conditions.
By monitoring internal temperature fluctuations of the optical transceiver in real time, the gold termination NTC chip provides precise temperature data to temperature control components such as TEC, ensuring signal integrity in wide temperature environment. To minimize temperature monitoring time, the NTC chip's lower surface is mounted on the TEC heat sink through soldering process, while the upper surface is connected to the pin via wire bonding, forming a temperature control closed loop. Once the optical transceiver starts operating, the EXSENSE gold termination bare chip captures the internal junction temperature. The temperature information collected by the NTC is then converted into electrical signals and transmitted to the MCU. If the temperature exceeds the preset target, the MCU takes protective measures to drive the TEC to increase cooling current and lower the temperature, preventing unstable performance caused by abnormal temperature.
As the "temperature stabilizer" of optical transceiver, how does the EXSENSE gold termination NTC chip stand out among so many NTC components?
1.High accuracy enhances temperature monitoring accuracy
The optical transceiver gold termination NTC chip has an accuracy of ±1%, allowing it to accurately capture tiny internal temperature changes in the optical transceiver and feed the data back to the MCU. This provides a reliable basis for subsequent temperature adjustments, effectively reducing communication error rates and meeting high-precision scenarios such as coherent optical communication.
2.Fast response for temperature detection
The gold termination bare chip responds quickly to temperature changes, allowing timely collection of temperature information. This helps the MCU adjust its working state in sync with temperature fluctuations. For example, when the temperature approaches the critical point, immediate cooling via the TEC prevents excessive temperature rise from damaging the optical transceiver, ensuring stable operation at all times.
3.Small dimension suits high-density integration trends
The dimension of EXSENSE optical transceiver NTC chip can reach 0.21mm × 0.21mm, taking up minimal space and accommodating the trend of miniaturization in optical transceiver. Furthermore, small-dimension gold termination NTC chip is more sensitive than larger-sized NTC chip, efficiently enhancing thermal response time and speeding up the temperature acquisition process.
As optical communication technology advances toward 400G and 800G high-speed rates, the temperature stability of optical transceiver has become a key factor determining transmission performance. The EXSENSE gold termination NTC chip, as the core of optical transceiver temperature control, ensures stable operation of the optical transceiver laser wavelength in complex temperature environments through its excellent electrical performance, promoting the high-quality and continuous development of optical transceiver.
