Hello, everyone.
In this post, I would like to share with you IPA.
IPA
The optical amplifiers (OAs) have high output optical power. If the fiber connecting to the OA breaks, the OA will still emit light if the laser on the amplifier is not shut down. The intense light will cause injuries to maintenance personnel during fiber maintenance. To prevent the personal injuries, the intelligent power adjustment (IPA) function promptly shuts down lasers on the affected OAs if the fiber breaks.
NOTICE:
If OA boards with maximum output optical power of over 21.3 dBm are configured in a system, the IPA function must be configured; otherwise, safety cannot be ensured and injuries may result.
If the IPA function is not configured for such a system, OA boards will report a LASER_HAZARD_WARNING alarm.
Without IPA: As shown in Figure 1, after a fiber is broken, the optical amplifiers still emit light during fiber maintenance if the IPA function is not configured. The laser radiation from the exposed fiber will cause injuries to human body.
With IPA: As shown in Figure 2, after a fiber is broken, lasers on the OAs are shut down if the IPA function is configured and enabled. No laser radiation comes from the exposed fiber, and therefore human safety is ensured.
That's all, I hope you like it.
Thank you!
