ice:servo-opl1
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ice:servo-opl1 [2016/08/15 17:44] – external edit 127.0.0.1 | ice:servo-opl1 [2020/09/25 16:21] – [Calculating Phase Noise] Michael Radunsky | ||
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^ ^ ICE-CP1-200 | ^ ^ ICE-CP1-200 | ||
^ Current Source ^ ^ ^ ^ | ^ Current Source ^ ^ ^ ^ | ||
- | |< | + | |Current range| |
- | |< | + | |Current setpoint resolution | 200 | 500 | μA | |
- | |< | + | |Current noise density((All measurements guaranteed on design and verified experimentally on D2-105 which uses same circuit.))| |
- | |< | + | |RMS Noise (10Hz - 100kHz)((All measurements guaranteed on design and verified experimentally on D2-105 which uses same circuit.))| |
- | |< | + | |RMS Noise (10Hz - 1MHz)((All measurements guaranteed on design and verified experimentally on D2-105 which uses same circuit.))| |
- | |< | + | |RMS Noise (10Hz - 10MHz)((All measurements guaranteed on design and verified experimentally on D2-105 which uses same circuit.))| |
- | |< | + | |Absolute accuracy| |
^ Offset Phase Lock Servo Input Signal^ ^^ ^ | ^ Offset Phase Lock Servo Input Signal^ ^^ ^ | ||
- | |< | + | |Min Offset Frequency | 250 || MHz | |
- | |< | + | |Max Offset Frequency | Min: 9, Typical: 10(( Maximum Offset Frequency depends on power of input beat-note signal.)) |
- | |< | + | | Max Electronic Beat-Note Input \\ (ICE-CP1-SMA)| |
- | |< | + | | Min Electronic Beat-Note Input \\ (ICE-CP1-SMA)| |
- | |< | + | | Min Electronic Beat-Note S/N \\ (ICE-CP1-SMA)| |
- | |< | + | | Max Optical Beat-Note Input \\ (ICE-CP1-FC)| |
- | |< | + | | Min Optical Beat-Note Input \\ (ICE-CP1-FC)((Approximate value as exact value depends on wavelength of the light and spatial overlap between the lasers.))| |
- | |< | + | | Front-panel Input Connection\\ (ICE-CP1-FC)((ICE-CP1-FC is shipped with an FC to SC multimode patch cord))| |
- | |< | + | | Front-panel Input Connection\\ (ICE-CP1-SMA)| |
^ Offset Phase Lock Servo Performance^ ^^ ^ | ^ Offset Phase Lock Servo Performance^ ^^ ^ | ||
- | |< | + | |Bandwidth((May be limited by the bandwidth of the laser being servoed))| |
- | |< | + | | Interval reference frequency drift | +/-20 || ppm | |
- | |< | + | | PFD Noise(( See [[# |
^ Loop Filter Parameters ^ ^^ ^ | ^ Loop Filter Parameters ^ ^^ ^ | ||
- | |< | + | |Proportional Gain | -72 -- 0 || dB | |
- | |< | + | |Proportional Gain Resolution | 2 || dB | |
- | |< | + | |Integrator| |
- | |< | + | |Differential | Off, 10, 30, 100, 300 || kHz | |
- | |< | + | |Differential Gain | 18 || dB | |
^Electrical Specifications^^^^^ | ^Electrical Specifications^^^^^ | ||
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Two numbers control the offset frequency of the ICE-OPL1: The divider setting N and the reference frequency. The divider setting N can be set to N=8,16,32 or 64. The reference frequency can be generated internally with a range from 50 - 240 MHz. A sequence of frequencies and frequency ramps can be programmed using OPL1's DDS Queue. Alternatively, | Two numbers control the offset frequency of the ICE-OPL1: The divider setting N and the reference frequency. The divider setting N can be set to N=8,16,32 or 64. The reference frequency can be generated internally with a range from 50 - 240 MHz. A sequence of frequencies and frequency ramps can be programmed using OPL1's DDS Queue. Alternatively, | ||
- | <WRAP center round box 450px>< | + | <WRAP center round box 450px> ** Offset = N * Reference Frequency **</ |
The table below shows the offset range for different values of N and using the internal or external frequency reference. | The table below shows the offset range for different values of N and using the internal or external frequency reference. | ||
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The phase-noise specified in Section 1.3 is referenced to the phase frequency detector (PFD) at 1 Hz. To convert that to the noise measured on the actual beat-note, it must be rescaled with the following formula: | The phase-noise specified in Section 1.3 is referenced to the phase frequency detector (PFD) at 1 Hz. To convert that to the noise measured on the actual beat-note, it must be rescaled with the following formula: | ||
- | <WRAP center round box 450px>< | + | <WRAP center round box 450px> **D2-135 Phase-Noise Floor = -213 + 20Log(N) + 10Log(F< |
where N is the value of the divider and F< | where N is the value of the divider and F< |
ice/servo-opl1.txt · Last modified: 2021/08/26 15:26 by 127.0.0.1