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Large Beam Large Beam Fiber Optic Collimators Fiber Optic Collimators

DescriptionSpecifications

Fiberoptic collimators come in all sizes commercially. Most of them are based on the successful GRIN lenses, which find their way into many passive and active components. However, GRIN lenses are not very suitable for visible wavelengths or large beam. Our high performance collimators employ high quality aspheric lenses and achromatic doublets to achieve low wave-front distortion, low divergence, and diffraction limited beam quality. Large-beam collimators are not only ideal for long-range target shooting but also good for pair coupling at long working distances. Some of our very large-beam (>14 mm) collimators have been used in free-space optics communications. Use these collimators with our standard laser-diode light source, pigtailed diode lasers, or receptacle laser diode modules. Princetel also produces custom retro-reflectors to pair with our collimators.

Characteristics Model CLA Model CLB Model CLD Model CLC Wavelength
2 532-1650 nm Beam size (1/e with SM fiber) 0.82 mm 2.0 mm 3.5 mm 4-10* mm Far field divergence (1310 nm) 1 mrad 0.5 mrad 0.3 mrad - Focal length (mm) 4.5 (NA=0.42) 11 (NA=0.25) 19 (NA=0.15) 17 (NA=0.3) Lens type Asphere (AR) PC (AR) Insertion loss (SM pairing) <0.5 dB (for 1310 and 1550 nm only) - Max pairing distance 0.25 m 1 m 4 m - Return loss (SM fiber) >55 dB Operating temperature -20 to 65 C Storage temperature -40 to 85 C Package materials Stainless steel Anodized AL Fiber choices Singlemode or PM Multimode Fiber jackets 900 um tight buffer or loose tubing Connector types FC/PC, SC/PC, ST, LC, FC/APC, SC/APC
Characteristics Model CLE Model CLF Model CLS Wavelength 2 532-1650 nm Beam size (1/e with SM fiber) 6 mm 14 mm 450 um Far field divergence (1310 nm) - - 2.5 mrad Focal length (mm) 35 (NA=0.38) 75 (NA=0.32) 1.9 (NA=0.46) Lens type Achromatic doublet (AR coated) GRIN (AR) Insertion loss (SM pairing) <1 dB (for 1310 and 1550 nm only) - Max pairing distance 5 m 8 m - Return loss (SM fiber) >55 dB Operating temperature -20 to 65 C Storage temperature -40 to 85 C Package materials Anodized AL Stainless Fiber choices Singlemode, multimode, or PM Fiber jackets 900 um tight buffer w/3 mm jacket 900 um Connector types FC/PC, SC/PC, ST, LC, FC/APC, SC/APC Fiber focal distance tuning range +/- 1 mm +/- 0.5 mm