Variable Optical Attenuators
MEMS Broadband Optical Attenuator – Fiber-Fiber™
The Fiber-Fiber™ series VOA is based on fiber-to-fiber direct coupling with a micro-electro-mechanical (MEMS) shutter in between. It eliminates the need for lens and optical coating, featuring low loss, ultra-broadband without altering fiber transmission character, high power, compact size, and easy drive. The current MEMS chips accommodate fiber with 3 to 105 mm core diameters. VOAs with fiber of larger diameters can be made with special chip fabrication run with an NRE charge. The Fiber-Fiber™ series VOA is compliant with the Telcordia 1209 and 1221 reliability standards. The VOA is driven by directly applying a low electrical voltage. The VOA is electrically a resistor load, has no polarity, and is electrostatically insensitive.

Specifications
MEMS Broadband Optical Attenuator – Fiber-Fiber™
| Fiber Type | SM400 | SM450 | SM600 | Hi780 | SM800 | Hi980 | Hi1060 | SM28 | SM1950 |
| Wavelength Range | 405 – 532 nm | 480 – 650 nm | 620 – 650 nm | 760 – 800 nm | 830 – 870 nm | 980 – 1550 nm | 960 – 1080 nm | 1020 – 1900 nm | 1.7 – 2.3 µm |
| Insertion Loss | <1 dB | <1 dB | ≤0.8 dB | ≤0.6 dB | ≤0.5 dB | ≤0.5 dB | ≤0.4 dB | ≤0.2 dB | ≤0.5 dB |
| Maximum Attenuation | 50 dB | 50 dB | 50 dB | 50 dB | 50 dB | 50 dB | 50 dB | 48 dB | 48 dB |
| Max Optical Power | 1mW | 5mW | 0.1W | 0.2W | 0.3W | 0.3W | 0.3W | 0.5W | 0.5W |
| Polarization DL | 0.2 dB@20dB | 0.2 dB@20dB | 0.2 dB@20dB | 0.2 dB@20dB | 0.2 dB@20dB | 0.2 dB@20dB | 0.2 dB@20dB | 0.2 dB@20dB | 0.2 dB@20dB |
| Return Loss | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB |
| Operating Temperature | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C |
| Storage Temperature | 50 to 85°C | 50 to 85°C | 50 to 85°C | 50 to 85°C | 50 to 85°C | 50 to 85°C | 50 to 85°C | 50 to 85°C | 50 to 85°C |
| Fiber Type | PM405 | PM460 | PM630 | PM780 | PM850 | PM980 | PM1550 | PM1950 |
| Wavelength Range | 400 – 680 nm | 460 – 700 nm | 620 – 650 nm | 760 – 800 nm | 830 – 870 nm | 960 – 1080nm | 1260 – 1650nm | 1850 – 2200nm |
| Insertion Loss | ≤1.1 dB | ≤0.9 dB | ≤0.9 dB | ≤0.8 dB | ≤0.7 dB | ≤0.6 dB | ≤0.2 1dB | ≤0.8 dB |
| Max Attenuation | 50 dB | 50 dB | 50 dB | 50 dB | 50 dB | 35 dB | 35 dB | 70 dB |
| Extinction Ratio | >20 dB | >20 dB | >20 dB | >20 dB | >20 dB | >20 dB | >20 dB | >20 dB |
| Return Loss | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB |
| Max Power | 1mW | 5mW | 0.1W | 0.2W | 0.3W | 0.3W | 0.5W | 0.5W |
| Operating Temperature | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C |
| Storage Temperature | 50 to 90°C | 50 to 90°C | 50 to 90°C | 50 to 90°C | 50 to 90°C | 50 to 90°C | 50 to 90°C | 50 to 90°C |
| Fiber Type | GIF50 | GIF625 | FG50LGA | FG105LCA | FG10LDA |
| Wavelength Range | 800 – 1600 nm | 800 – 1600 nm | 400 – 2400 nm | 400 – 2400 nm | 700 – 1000 nm |
| Insertion Loss | ≤0.5 dB | ≤0.5 dB | ≤0.8 dB | ≤1 dB | ≤1 dB |
| Maximum Attenuation | 8 dB | 8 dB | 8 dB | 8 dB | 8 dB |
| PDL | 0.01 dB | 0.01 dB | 0.01 dB | 0.01 dB | 0.01 dB |
| Return Loss | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB | ≥35 dB |
| Max Optical Power | 0.5W | 0.5W | 0.5W | 0.5W | 0.5W |
| Operating Temperature | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C | 40 to 80°C |
| Storage Temperature | 40 to 85°C | 40 to 85°C | 40 to 85°C | 40 to 85°C | 40 to 85°C |
Downloads
Datasheets & documents
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