The featured FemtoSecond Grating (FSG®) is a fiber Bragg grating fabricated with ultra-short laser pulses, using an exclusive special through-the-coating inscription method. The inscribed FSG® maintains the untouched high strength of the optical fiber and incorporates new performance features.
FSG®s written in polyimide coated low attenuation fiber.
The FSG-A01 is a uniform apodized grating written into a high-strength 125 μm (cladding diameter) polyimide coated optical fiber, enhanced for functioning in the 1550 nm wavelength window.
|FWHM (Typical value)
||1510 nm to 1590 nm
|Absolute wavelength accuracy
||≤ 0.5 nm
|Relative wavelength accuracy
||≤ 0.3 nm
|Birefringence effect (Typical value)
||< 8 pm
||~ 4 mm
|Side Lobe Suppression ratio (Typical value)
||≥ 10 dB
|Grating separation (center to center)
||≥ 5 mm
|Temperature Operating range
||-55 to 300 °C
|Typical Tensile strength FSG according to IEC60793 @ 30 mm/min
||> 4 GPa
(> 5% strain)