Link to Relevant documents

Official reviews

Review in March 2018 Material by Yokogawa et al.,
- Main focus on the selection of the optical fibers
Review in August 2017 Material by Kambara et al.,
- Main focus on the readiness for the implementation.

See here.

When you combine two beams with power P, we get the beat note with amplitude of 2 alpha P Sin phi, where alpha is the contrast (0~1) and phi is the relative phase between the fields. Thus, the phase sensitivity is 2 alpha P [W/rad]. e.g. Two 1mW beams geneartes 4mWpp beat if the contrast is 1. The slope is 0.002 alpha W/rad.
For the broadband PD, InGaAs is not relevant because of the high junction capacitance. If we use Si PD (like FFD-100 phi=2.5mm), the responsivity is eta = 0.08 [A/W].
BBPD Transimepedance and the shotnoise intercept current are assumed to be 1e3 [V/A] and 0.3 [mA], from the experience of LIGO BBPD.
Total gain is 1 [V/rad] if we assume alpha and P to be 0.5 and 12.5mW respectively.
Shot noise
- Shot noise of the modulated beam is described by <in^2> = 2 e [I0+1/2 dI Sin(phi)], according to N. Mio and K. Tsubono, Physics LettersA 164 (1992) 255-258.　Does nonstationary part cancel because of the orthogonality of the RF and LO signals???
- Consider only the stationary part, in = sqrt(2 e I0). Thus in/eta/(2 alpha P) = sqrt(e / eta / alpha / P) [rad/rtHz]. This corresponds to 2.5e-8 rad/rtHz.

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- * Review in August 2017 [[ | Material by Kambara et al.,]]
   Main focus on the conceptual control topology.
+ * Review in August 2017 [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7060 | Material by Kambara et al.,]]
   Main focus on the readiness for the implementation.