NaokiAritomi - 20:26, Thursday 13 June 2019 (1410)
GRMC alignment and lock with new green phase shifter
[Aritomi, Eleonora P, Yuhang]
Today we replaced a green phase shifter with a new thick phase shifter (picture 1). After re-alignment of GRMC, we got good mode matching (picture 2) and succeeded in locking of GRMC with lower gain. Green power is 146mW before GRMC and 90mW after GRMC when MZ is maximized. So transmission of GRMC is 62% which is good.
Lock of green phase with BAB transmission seems stable with this new phase shifter.
We'll measure transfer function of green phase lock loop with new green phase shifter tomorrow.
Today we replaced a green phase shifter with a new thick phase shifter.
(We will take the picture later)
After re-alignment of GRMC, we got good mode matching (picture 1) and succeeded in lock of GRMC with lower gain. Green power is 146mW before GRMC and 90mW after GRMC when MZ is maximized. So transmission of GRMC is 62% which is good.
Today we replaced a green phase shifter with a new thick phase shifter.
(We will take the picture later)
After re-alignment of GRMC, we got good mode matching (picture 1) and succeeded in lock of GRMC with lower gain. Green power is 146mW before GRMC and 90mW after GRMC when MZ is maximized. So transmission of GRMC is 62% which is good.
Images attached to this report
