UMS-Compact
(Ultrastable Microwave System)
First Photonic Microwave Source with Phase-Coherent Optical-to-Microwave Division
Ultrastable Microwave System: photonic microwave technology representing a paradigm shift in microwave signal synthesis.
This groundbreaking advancement is the first commercially-available photonic microwave source that utilizes the phase-coherent division of high-fidelity optical signals into the microwave domain.
By employing this innovative approach, we can drastically reduce optical phase noise to levels that were previously physically impossible with more established technologies like multiplied OCXOs or room-temperature Sapphire oscillators.
The UMS-Compact is the bigger brother of the UMS-Mini.
It also includes a fully autonomous ultrastable laser and a frequency comb, in a robust custom-designed rack-system to be operated in telecom cabinets, radar and radio-astronomy domes.
It allows for the addition of customizable extensions for multiple frequency outputs, both in RF/Microwave or for comb-line synthesis at specific optical frequencies.
The UMS-Compact can be further synchronized, on request, to optical or microwave signals as inputs, making it an ideal flywheel for metrological fiber networks and RF over fiber nodes.
It is the follow-up system to the Menlo device featured in Jahangir et ali 2023*.
(*Jahangir, M. et al. “Building a Quantum-Enabled, Networked Radar Testbed for Urban Surveillance of Low Observable Aerial Targets – Current Status,” in 10th Military Sensing Symposium (NATO STO, 2023). doi:10.14339/STO-MP-SET-311.)
Features
- Complete robust solution, comprising an ultrastable laser and an optical frequency comb
- Fully remotely controllable
- Customizable, with the possibility to equip the unit with multiple outputs, both optical and RF/Microwave frequencies
- Highest stability
Key Specifications
- Configurable with multiple phase-coherent outputs 101 102 RF and Microwave frequency outputs: 1-20 GHz with guaranteed spectral purity
- Includes 1 PPS, 10 MHz and 100 MHz
- Phase noise as low as <-95 dBc/Hz at 1 Hz, -160 dBc/Hz at ≥ 10 kHz from a 10 GHz carrier
- Frequency instability (for X-Band signals) as low as <2E-15 at 1 s, <5E-11 (50 ppt) at 1 day (without drift-removal)
- De-drift option available (via GPS or more stable references)
Applications
- Atomic Clocks / Optical and Microwave Time-scale Realization
- Very Large Baseline Interferometry (VLBIs)
- Fiber-link Networks
- Quantum Computing
- Test & Measurements
- OCXOs / Oscillators Calibration / Measure ments
- Telecom 5G/6G
Specifications
Phase noise
| 10 MHz | 100 MHz | 10 GHz | |
| Offset frequency (Hz) | |||
| 1 | -140 | -125 | -95 |
| 10 | -150 | -135 | -115 |
| 100 | -155 | -145 | -130 |
| 1k | -165 | -150 | -145 |
| 10k | -165 | -155 | -160 |
| 100k | <-165 | -155 | <-160 |
| 1M | <-165 | -155 | <-165 |
Frequency stability (absolute*)
| 10 MHz | 100 MHz | 10 GHz | |
| Averaging time (s)) | |||
| 0.1 | <3E-14 | <5E-14 | <3E-15 |
| 1 | <3E-14 | <5E-14 | <3E-15 |
| 10 | <1E-13 | <1E-13 | <1E-14 |
| 100 | <5E-13 | <5E-13 | <1E-13 |
| 1000 | <5E-12 | <5E-12 | <1E-12 |
| >10000 | <5E-11 | <5E-11 | <1E-11 |
Outputs
| 1/100 MHz | Microwave | |
| Level, 50 Ω | >7 dBm | >-5 dBm** |
| Isolation | >70 dB | >80 dB |
| Spurius | <-90 dBc | <-70 dBc |
**Please inquire for change of specs for amplified power levels.
Power / Environmental Requirements
| Operating Voltage | 100/115/230 VAC |
| Line Frequency | 50 to 60 Hz |
| Operating Temperature | 22 ± 5 °C |
| Power Consumption | <250 W |
Menlo Systems 홈페이지
