View source for 20250180934. Bias Control Devi (ZHEJIANG SCI-TECH UNIVERSITY)

= BIAS CONTROL DEVICE AND METHOD BASED ON PULSE PHASE STABILIZATION FOR MACH-ZEHNDER MODULATOR =

'''Abstract''':
the present disclosure discloses a bias control device and method based on pulse phase stabilization for adaptive mach-zehnder modulator. the device includes a mode-locked femtosecond laser, a mach-zehnder modulator, an optical fiber coupler, a photodetector, an amplifying filter, an analog-to-digital converter, an fpga bias control module, a digital-to-analog converter, a bias amplifier, and an electrical pulse generator. the fpga bias control module demodulates the amplitude of the high-frequency signal to determine and output the initial bias value, setting the operating point of mzm at the null point. simultaneously, the low-frequency signal phase at this moment is demodulated as the target value and compared with the demodulated phase of the real-time updated low-frequency signal to generate an error signal. through pid, the bias voltage is adjusted in real time to achieve stability at the null point.

'''Inventor(s)''': [[:Category:Benyong CHEN of Zhejiang  CN|Benyong CHEN]], [[:Category:Jiandong XIE of Zhejiang  CN|Jiandong XIE]], [[:Category:Liping YAN of Zhejiang  CN|Liping YAN]], [[:Category:Ye LIN of Zhejiang  CN|Ye LIN]]

'''CPC Classification''': [[:Category:CPC_G02F1/0123|G02F1/0123]] (for the control of the intensity, phase, polarisation or colour   (,  take precedence))


[[Category:Patent Applications]]
[[Category:ZHEJIANG SCI-TECH UNIVERSITY]]
[[Category:CPC_G02F1/0123]]
[[Category:Benyong CHEN of Zhejiang  CN]]
[[Category:Jiandong XIE of Zhejiang  CN]]
[[Category:Liping YAN of Zhejiang  CN]]
[[Category:Ye LIN of Zhejiang  CN]]

[https://wikipatents.org/index.php?search=20250180934+rejection&title=Special%3ASearch&wprov=acrw1_-1 Search for rejections for patent application number 20250180934]


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