摘要:
The present application provides a method for controlling optical power, the method includes: monitoring output optical power of an optical source, and judging whether a preset test control signal is received; when the preset test control signal is not received, modulating a data signal to output light of the optical source, and adjusting a bias current of the optical source according to an output optical power monitoring result of the optical source to implement automatic power control; and when the preset test control signal is received, starting a test and superimposing a test signal to the data signal to form a superimposed signal and modulating the superimposed signal to the output light of the optical source, the output optical power monitoring result of the optical source is ignored during the test period to maintain the bias current of the optical source at a preset target value. The present application further provides an apparatus for controlling optical power.
摘要:
Embodiments of the present invention disclose an optical signal monitoring and control method, including: receiving a first optical signal, performing optical-to-electrical conversion on the first optical signal, and outputting a converted first electrical signal; monitoring the first electrical signal, and acquiring a monitored power of the first electrical signal; adjusting the monitored power of the first electrical signal according to a target monitored power of the first electrical signal, and outputting a second electrical signal, so that a monitored power of the second electrical signal is the target monitored power; and performing optical-to-electrical conversion on the second electrical signal according to a correspondence between the target monitored power of the first electrical signal and a target extinction ratio of the first optical signal, and outputting a converted second optical signal, where the second optical signal is an optical signal that has a target extinction ratio. Correspondingly, the embodiments of the present invention further disclose a related apparatus and system. The embodiments of the present invention can implement precise control on an extinction ratio of an optical signal.
摘要:
Embodiments of the present invention disclose an OTDR test signal modulation circuit, including a laser diode drive, a laser diode, a current adjusting unit, and an OTDR control unit. The laser diode drive is connected to the laser diode and is configured to drive, according to an input data signal, the laser diode to transmit data light. The current adjusting unit is connected to the laser diode and the OTDR control unit and is configured to adjust a current flowing through the laser diode according to an OTDR test signal provided by the OTDR control unit, so as to modulate the OTDR test signal to the data light transmitted by the laser diode. Moreover, the embodiments of the present invention also disclose a passive optical network system and apparatus.
摘要:
The present application provides a method for controlling optical power, the method includes: monitoring output optical power of an optical source, and judging whether a preset test control signal is received; when the preset test control signal is not received, modulating a data signal to output light of the optical source, and adjusting a bias current of the optical source according to an output optical power monitoring result of the optical source to implement automatic power control; and when the preset test control signal is received, starting a test and superimposing a test signal to the data signal to form a superimposed signal and modulating the superimposed signal to the output light of the optical source, the output optical power monitoring result of the optical source is ignored during the test period to maintain the bias current of the optical source at a preset target value. The present application further provides an apparatus for controlling optical power.
摘要:
The present application provides a method for controlling optical power, the method includes: monitoring output optical power of an optical source, and judging whether a preset test control signal is received; when the preset test control signal is not received, modulating a data signal to output light of the optical source, and adjusting a bias current of the optical source according to an output optical power monitoring result of the optical source to implement automatic power control; and when the preset test control signal is received, starting a test and superimposing a test signal to the data signal to form a superimposed signal and modulating the superimposed signal to the output light of the optical source, the output optical power monitoring result of the optical source is ignored during the test period to maintain the bias current of the optical source at a preset target value. The present application further provides an apparatus for controlling optical power.
摘要:
Embodiments of the present invention disclose a method and an apparatus for testing an optical fiber, relating to the field of optical communications technologies. A method for testing an optical fiber includes: receiving a test optical signal from an optical fiber network, and converting the test optical signal into a test current signal; receiving, by a transimpedance amplifier, the test current signal by using a first working mode and outputting a first test voltage signal; acquiring a swing of the first test voltage signal, and determining whether the swing of the first test voltage signal meets a preset condition; and receiving, by the transimpedance amplifier, the test current signal by using a second working mode and outputting a second test voltage signal when the swing of the first test voltage signal meets the preset condition, where an upper limit and a lower limit of a receiver dynamic range when the transimpedance amplifier works in the first working mode are different from those when the transimpedance amplifier works in the second working mode. The embodiments of the present invention further provides a passive optical network system.