Faraday Rotator Mirrors (FRMs) are used in a number of fiber optic applications, including interferometric sensor systems. In general, FRM performance parameters are specified over a central wavelength and narrow temperature range. This means that the rotation angle will change over wavelength and temperature.
Lightel now offers a compact form factor, broadband FRM (BBFRM) that rotates the light 45 degrees (single pass) over a wavelength range of 1550 nm ± 30 nm, and a temperature range of -20°C to +70°C. With a constant rotation angle within this bandwidth and operating temperature range, the broadband FRM can reduce noise dramatically for interferometric sensor systems.
| Parameter | |
|---|---|
| Center Wavelength | 1550 nm |
| Bandwidth | ± 30 nm |
| Insertion Loss | ≤ 1.0 dB |
| Faraday Rotation Angle (single pass, within the bandwidth & operating temperature range) | 45 ± 0.5° |
| Extinction Ratio (PM) | ≥ 20 dB |
| PDL (SM) | ≤ 0.05 dB |
| Maximum Power | 300 mW |
| Operating Temperature | -20°C ~ +70°C |
| Storage Temperature | -40°C ~ +85°C |
| Package Dimensions | 5.0 mm (Φ) x 20 mm (L) |
Note 1: All values specified are without connectors.
Note 2: SM fiber type: SMF-28e or compatible fiber.
Note 3: PM fiber type: PM 1550 Panda fiber.
Note 4: Other wavelengths available upon request. .
