Variable Optical Attenuators
The optical power regulator is engineered to maintain a constant output power by compensating for input fluctuations. It operates by tapping a small portion of the output light with a detector and feeding it into a precision closed-loop circuit, which controls a MEMS variable fiber optical attenuator positioned between the input and output. With a wide dynamic range, it effectively limits output against input surges of up to 40 dB. The output power level can be adjusted manually via a set screw or remotely through a USB-connected GUI. The system requires an insertion loss of approximately 2 dB to regulate the output power effectively. Additionally, it compensates for polarization-dependent loss (PDL) variations along with optical power fluctuations.
Configuration options
Configure the options below and add your exact build to the enquiry — we confirm the part number and availability.
We confirm the exact part number for your configuration on enquiry.
Input Power: < 0.5W · Wavelength: 1550 · Output power: 0.001W · Dynamic: 40dB · Fiber Type: SMF-28 · Fiber Length: 1.0 m · Connector: None
Application context
Application guidance is tied to the configured wavelength, fiber interface and optical-budget fields for this family.
Fiber Optical Power Regulator: Optical power control depends on preserving the optical budget through the complete path. The 1550, 2000, 1310, 1480, 1060, 1625, 780, 850, 650, 550, 400 wavelength specification sets source and detector compatibility. The fiber/interface entry (SMF-28, HI1060, 780HP, PM1550, PM850, PM980, SM400, SM450, PM400, PM460, SM600, PM630, PM780, SM800, 50/125, SM1950, PM1950) must match the connected components.
Fiber Optical Power Regulator: Receiver calibration depends on preserving the optical budget through the complete path. The 1550, 2000, 1310, 1480, 1060, 1625, 780, 850, 650, 550, 400 wavelength specification sets source and detector compatibility. The fiber/interface entry (SMF-28, HI1060, 780HP, PM1550, PM850, PM980, SM400, SM450, PM400, PM460, SM600, PM630, PM780, SM800, 50/125, SM1950, PM1950) must match the connected components.
Specifications
| Fiber Type | SM400 | SM450 | PM400 | PM460 | SM600 | PM630 | 780HP | PM780 | SM800 | PM850 | PM980 | Hi1060 | 50/125 | SM28 | PM1550 | SM1950 | PM1950 |
| Wavelength (nm) | 360 – 530 | 480 – 650 | 400 – 480 | 460 – 700 | 620 – 650 | 620 – 650 | 760 – 800 | 760 – 800 | 830 – 870 | 830 – 870 | 910 – 1080 | 960 – 1080 | 800 – 1400 | 1250 – 1650 | 1250 – 1650 | 1700 – 2300 | 1700 – 2300 |
| Dynamic Range (dB) | >40 | >40 | >40 | >40 | >40 | >40 | >40 | >40 | >40 | >40 | >40 | >40 | >40 | >40 | >40 | >40 | >40 |
| Fiber Cover (mm) | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 |
| Optical Power (W) | 0.05 | 0.05 | 0.06 | 0.08 | 0.09 | 0.09 | 0.1 | 0.1 | 0.2 | 0.2 | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
| Fiber Length (m) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Connector | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None |
| PER | N/A | N/A | >12 | >14 | N/A | >16 | N/A | >18 | N/A | >18 | >18 | N/A | N/A | N/A | >20 | N/A | >20 |
System integration
Use these checks to connect Fiber Optical Power Regulator to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
Technical FAQ
Fiber Type: SMF-28, HI1060, 780HP, PM1550, PM850, PM980, SM400, SM450, PM400, PM460, SM600, PM630, PM780, SM800, 50/125, SM1950, PM1950 · Fiber Length: 1.0 m. Specify connector polish and fiber architecture together. FC/PC, FC/APC and SMA interfaces, and single-mode, multimode and polarization-maintaining fibers, impose different return-loss, mode-field and alignment requirements.
Wavelength: 1550, 2000, 1310, 1480, 1060, 1625, 780, 850, 650, 550, 400 · Wavelength (nm): 360 – 530 / 480 – 650 / 400 – 480 / 460 – 700 / 620 – 650 / 620 – 650 / 760 – 800 / 760 – 800 / 830 – 870 / 830 – 870 / 910 – 1080 / 960 – 1080 / 800 – 1400 / 1250 – 1650 / 1250 – 1650 / 1700 – 2300 / 1700 – 2300. Check the Variable Optical Attenuators passband, insertion loss, return loss and power handling at the actual source wavelength; a nominal telecom-band label is not a substitute for the configured range.
Share your wavelength, fiber type, connector, power handling and control requirements and we will qualify the matching configuration and part number.
Model selection
Compare Fiber Optical Power Regulator with the closest available models in the Variable Optical Attenuators family. Confirm option-dependent values on the final configuration before ordering.
| Selection parameter | Fiber Optical Power Regulator (current) | Fiber Optical Power Regulator / Protector / Noise Reduction | High Power Inline Variable Fiber Attenuator up to 20W USB/RS232 |
|---|---|---|---|
| Wavelength range | 1550, 2000, 1310, 1480, 1060, 1625, 780, 850, 650, 550, 400 | Confirm for this model | 450, 532, 630, 780, 850, 980, 1060, 1310, 1550, 2000 |
| Optical performance | Confirm for this model | Confirm for this model | Confirm for this model |
| Fiber type | SMF-28, HI1060, 780HP, PM1550, PM850, PM980, SM400, SM450, PM400, PM460, SM600, PM630, PM780, SM800, 50/125, SM1950, PM1950 | Confirm for this model | SMF-28, PM1550, 50/125, 62.5/125, 105/125 |
| Connector / control | None, FC/APC, Special | Confirm for this model | None, FC/PC, FC/APC, Special |
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