From 91b44d57a9e2c7376b43ccd1d65c29e07229e880 Mon Sep 17 00:00:00 2001
From: Andreas Freise <adf@star.bham.ac.uk>
Date: Fri, 31 Oct 2014 18:25:12 +0000
Subject: [PATCH] small tweaks.
---
examples/sagnac/master.py | 2 +-
examples/sagnac/sagnac_base.kat | 35 ++++++++++++++++++++++-----------
2 files changed, 24 insertions(+), 13 deletions(-)
diff --git a/examples/sagnac/master.py b/examples/sagnac/master.py
index c6a3759..a9a580a 100644
--- a/examples/sagnac/master.py
+++ b/examples/sagnac/master.py
@@ -97,7 +97,7 @@ def main():
legend['bs']=mylegend('Imbalanced BS 49:51','g')
print "--------------------------------------------------------"
- print " 3. Imbalanced small mass"
+ print " 3. Mass asymmetry"
result['mass']=mass(kat)
legend['mass']=mylegend('Mass asymmetry 10%','c')
diff --git a/examples/sagnac/sagnac_base.kat b/examples/sagnac/sagnac_base.kat
index a02cf99..adee6e7 100644
--- a/examples/sagnac/sagnac_base.kat
+++ b/examples/sagnac/sagnac_base.kat
@@ -1,18 +1,15 @@
#################################################################
-# Finesse input file of the Glasgow Speedmeter Experiment
-# Based on an OptoCAD export, cleaned and prepared in this form
+# Finesse input file of the Glasgow Speedmeter Experiment,
+# based on an OptoCAD export, cleaned and prepared in this form
# during the Speedmeter Workshop, October 2014. For help and
# questions, feel free to contact me at: adf@star.sr.bham.ac.uk
# Andreas Freise, 30.10.2014
#
-# The parameters below don't necessarily match the current speedmeter
-# design, instead they were chosen to match Stefan Danilishon's Matlab
-# example for comparison. However, you can easily change the parameters
-# to an updated design without problem. No special tuning or so is
-# required.
-#
-# Some strange sounding component names inlcuding '{p}' and '{s}' are just
-# OptoCAD notations and have no special meaning in Finesse.
+# The parameters below don't necessarily match the current
+# speedmeter design, instead they were chosen to match Stefan
+# Danilishin's Matlab example for comparison. However, you can
+# easily change the parameters to an updated design without
+# problem. No special tuning or so is required.
#################################################################
## general constants
@@ -56,7 +53,14 @@ s rs8 $lrs8 nM7n nM1an
bs1 M1a 500u 0 0 0 nM1aw nM1an nM1ae nM1as
attr M1a Rc -7.91
attr M1a mass $MassM1
-s rs12 1.315 nM3an nM1ae
+s rs12 1.315 nM3an nM1ae
+##################################################################
+# Note that the following lines are 'wrong'. The 'dump' notes
+# are not open ports, i.e. even with the transmssion of the ETMs
+# non-zero, no quantum noise will enter through this port.
+# I am using dump notes here to match Stefan's example calculation,
+# but you should not use 'dump' nodes with any mirror or BS that
+# has non-zero losses or transmission
bs1 M3a $T_ETM 0 0 0 nM3aw nM3an dump dump #nM3aT1 nM3aT2
attr M3a mass $MassM23
s rs11 0.2 1. nM2an nM3aw
@@ -82,7 +86,14 @@ s rs26 $lrs26 nM8n nM1bw
bs1 M1b 500u 0 0 0 nM1bw nM1bn nM1be nM1bs
attr M1b Rc -7.91
attr M1b mass $MassM1
-s rs19 1.315 nM1be nM2bw
+s rs19 1.315 nM1be nM2bw
+##################################################################
+# Note that the following lines are 'wrong'. The 'dump' notes
+# are not open ports, i.e. even with the transmssion of the ETMs
+# non-zero, no quantum noise will enter through this port.
+# I am using dump notes here to match Stefan's example calculation,
+# but you should not use 'dump' nodes with any mirror or BS that
+# has non-zero losses or transmission
bs1 M2b $T_ETM 0 0 0 nM2bw nM2bn dump dump #nM2bT1 nM2bT2
attr M2b mass $MassM23
s rs20 0.2 nM2bn nM3bw
--
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