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2021/10/08 00:37
FFC-100 Fiber Frequency Comb Quick Start
Guide
Model No. FFC-100-100 and FFC-100-200
Document Last Updated on 2021/10/06 23:13
Please read
Limited Warranty
FFC-100 Fiber Frequency Comb
Useful Links
Vescent manuals
page.
FFC-100
API.
FFC-100 web
page.
Github page for FFC-100 firmware revisions FFC-100 Manual
Please check back for added functionality. Contact
corrections, or to request added functionality.
Notice
Do not block the airflow vents on the side of the chassis or the fan inputs & outputs
on either the FFC-100 or the SLICE-FPGA.
The mode-lock indicator on the GUI front panel cannot detect CW breakthrough. Keep
the oscillator current within the range specified in your product's final test
documentation or CoC.
Operating the FFC
This document provides instructions on how to operate the Vescent Photonics FFC-100 when
controlled by the Vescent SLICE-FPGA.
Purchase Includes
FFC-100 rack-mountable Fiber Frequency Comb module
Power cord for your country (if known)
Product Manuals - https://www.vescent.com/manuals/
1/12
and
General Warnings and Cautions
Fig. 1: The
FFC-100 Fiber Frequency Comb Quick Start Guide
prior to operating the FFC-100.
sales [at] vescent [dot] com
for questions and
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Related Manuals for Vescent FFC-100
Summary of Contents for Vescent FFC-100
- Page 1 final test documentation or CoC. Operating the FFC This document provides instructions on how to operate the Vescent Photonics FFC-100 when controlled by the Vescent SLICE-FPGA. Purchase Includes FFC-100 rack-mountable Fiber Frequency Comb module Power cord for your country (if known) Product Manuals - https://www.vescent.com/manuals/...
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Page 2: Proper Usage
Tab. 1: Absolute Maximum Ratings The FFC-100 employs a proprietary design hybrid power supply that is both low noise and capable of accepting a range of AC input line voltages. It will accept input line voltages within the ranges shown... - Page 3 2021/10/08 00:37 3/12 FFC-100 Fiber Frequency Comb Quick Start Guide Fig. 2: FFC-100 electrical and optical connection diagram (Click for larger image) Parameter Rating ƒ Power Input <1.5 mW max Tab. 3: Operating Parameters FFC-100 Operation FFC Start Up GUI Touch the “System Off”...
- Page 4 Last update: 2021/10/06 23:13 ffc:100 https://www.vescent.com/manuals/doku.php?id=ffc:100 Fig. 3: The FFC-100 GUI in off state Fig. 4: Select Standby laser state Once the temperature servos have stabilized and “Standby” has stopped blinking, touch the “Standby” drop-down menu (figure 5) and select “Laser On”...
- Page 5 2021/10/08 00:37 5/12 FFC-100 Fiber Frequency Comb Quick Start Guide Fig. 6: The FFC-100 GUI: Standby to System On Fig. 7: System On If necessary, adjust oscillator current by either holding down the “Osc” touch screen button and typing in a desired set-point (figure...
- Page 6 Last update: 2021/10/06 23:13 ffc:100 https://www.vescent.com/manuals/doku.php?id=ffc:100 Fig. 9: Select PZT Gain FPGA Control The SLICE-FPGA dual-channel Offset Phase Lock Servo can be used to phase lock ƒ to a reference (TBD) and ƒ to a reference laser such as the Rio Planex.
- Page 7 2021/10/08 00:37 7/12 FFC-100 Fiber Frequency Comb Quick Start Guide Fig. 11: FPGA GUI Start Screen Navigate to the “Filter Settings” tab and select “Narrowband (6MHz)” for both DDC0 and DDC1 (figure 12). Fig. 12: Set Loop Filter Bandwidth Product Manuals - https://www.vescent.com/manuals/...
- Page 8 Baseband IQ plot is circular (figure 13). This centers the beat note near the reference frequency. It is also possible to adjust the FFC-100 oscillator current on its front panel to make this adjustment. Fig. 13: Centering ƒ(CEO) on reference frequency (Baseband IQ optimization) Press the “Lock”...
- Page 9 2021/10/08 00:37 9/12 FFC-100 Fiber Frequency Comb Quick Start Guide Fig. 14: Locking ƒ(CEO) Locking ƒ(opt) Navigate to the “Optical Lock” window. Center the beat note near the reference frequency: adjust the “Offset DAC 1” slider (or your reference laser frequency) until you see a circular Baseband IQ diagram (figure...
- Page 10 Last update: 2021/10/06 23:13 ffc:100 https://www.vescent.com/manuals/doku.php?id=ffc:100 Fig. 15: Centerig ƒ(opt) on reference frequency (Baseband IQ optimization) Press the “Lock” button (figure 16). If ƒ doesn’t lock, change the VCO sign to the opposite polarity and try again. If the system continues to not lock, lower the K value.\\...
- Page 11 2021/10/08 00:37 11/12 FFC-100 Fiber Frequency Comb Quick Start Guide Fig. 16: Locking ƒ(opt) Adjust PID settings (bottom middle of figure 16) accordingly to lower the integrated phase noise of each parameter (f and f ). The default settings provided in the software are a good place to start but tweaking the values can often improve performance.
- Page 12 Last update: 2021/10/06 23:13 ffc:100 https://www.vescent.com/manuals/doku.php?id=ffc:100 From: https://www.vescent.com/manuals/ - Product Manuals Permanent link: https://www.vescent.com/manuals/doku.php?id=ffc:100 Last update: 2021/10/06 23:13 https://www.vescent.com/manuals/ Printed on 2021/10/08 00:37...
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