Mach-Zehnder Fiber-Optic Links for Reaction History Measurements at the National Ignition Facility
We present the details of the analog fiber-optic data link that will be used in the chamber-mounted Gamma Reaction History (GRH) diagnostic at the National Ignition Facility (NIF) located at the Lawrence Livermore Laboratory in Livermore, California. The system is based on Mach-Zehnder (MZ) modulators integrated into the diagnostic, with the source lasers and bias control electronics located remotely to protect the active electronics. A complete recording system for a single GRH channel comprises two MZ modulators, with the fiber signals split onto four channels on a single digitizer. By carefully selecting the attenuation, the photoreceiver, and the digitizer settings, the dynamic range achievable is greater than 1000:1 at the full system bandwidth of greater than 10 GHz. The system is designed to minimize electrical reflections and mitigate the effects of transient radiation darkening on the fibers.
- Research Organization:
- National Security Technologies, LLC (United States)
- Sponsoring Organization:
- USDOE; USDOE National Nuclear Security Administration (NA)
- DOE Contract Number:
- DE-AC52-06NA25946
- OSTI ID:
- 992609
- Report Number(s):
- DOE/NV/25946-818; TRN: US1100408
- Journal Information:
- Journal of Physics Conference Series, Vol. 244, Issue 3; Conference: The Sixth International Conference on Inertial Fusion Sciences and Applications 6–11 September 2009, San Francisco, USA
- Publisher:
- Journal of Physics
- Country of Publication:
- United States
- Language:
- English
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