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Entry  Thu Apr 1 00:43:33 2010, Mott, Update, General, PZT response for the innolight Innolight_Bode.png
    Reply  Thu Apr 1 07:17:15 2010, Koji, Update, General, PZT response for the innolight 
       Reply  Thu Apr 1 10:21:58 2010, Mott, Update, General, PZT response for the innolight Innolight_Response.pngLightwave_response.png
          Reply  Thu Apr 1 10:47:48 2010, Koji, Update, General, PZT response for the innolight 
             Reply  Thu Apr 1 12:07:22 2010, rana, Update, General, PZT response for the innolight 
                Reply  Thu Apr 1 18:05:29 2010, Mott, Update, General, PZT response for the innolight Innolight_Response_calFix.pngLightwave_response_calFix.png
                   Reply  Thu Apr 1 18:44:40 2010, Koji, Update, General, PZT response for the innolight 
                      Reply  Thu Apr 1 19:59:32 2010, Mott, Update, General, PZT response for the innolight Innolight_AM_Response.pngInnolight_AM_PM.pngInnoVsLW_PM.pngInnolight_AM_Response.pngLightwave_AM_PM.png
                         Reply  Mon Apr 12 14:20:10 2010, kiwamu, Update, Green Locking, PZT response for the innolight 
                            Reply  Tue Apr 13 19:53:06 2010, Mott, Update, Green Locking, PZT response for the innolight and lightwave 6x
Message ID: 2748     Entry time: Thu Apr 1 10:21:58 2010     In reply to: 2747     Reply to this: 2749
Author: Mott 
Type: Update 
Category: General 
Subject: PZT response for the innolight 

Quote:

The shape of the TF looks nice but the calibration must be wrong.

Suppose 1/f slope with 10^-4 rad/V at 10kHz. i.e. m_pm = 1/f rad/V
This means m_fm = 1 Hz/V. This is 10^7 times smaller than that of LWE NPRO.

Quote:

Kiwamu and I measure the PZT response of the Innolight this evening from 24 kHz to 2MHz.  

We locked the PLL at ~50 MHz offset using the Lightwave NPRO and and swept the Innolight with the network analyzer (using the script I made; it has one peculiar property, but it does work correctly).  

We will post the plot of the Lightwave PZT response tomorrow morning.

 

 Koji is absolutely right.  I just double checked my matlab code, and saw that I divided when I should have multiplied.  The correctly calibrated plots are attached here for the Innolight and the lightwave.  Kiwamu and I will measure the amplitude and the jitter today.

Attachment 1: Innolight_Response.png  14 kB  Uploaded Thu Apr 1 11:29:44 2010  | Hide | Hide all
Innolight_Response.png
Attachment 2: Lightwave_response.png  15 kB  Uploaded Thu Apr 1 11:30:00 2010  | Hide | Hide all
Lightwave_response.png
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