Product Summary Etalons Miniature etalons for laser wavelength stabilization and DWDM applications A Fabry-Perot etalon, which consists of two highly reflective surfaces with a precisely controlled separation, functions as a multiple wavelength, ultra-narrow bandpass filter. Etalons are most useful as laser wavelength stabilization components and for interleaving closely spaced wavelengths in various DWDM applications. Spectra-Physics produces three types of Fabry-Perot etalons; solid, air-spaced and thermally insensitive air-spaced. Solid etalons are single, thin (approximately 2 mm thick) plane parallel plates with high reflection coatings on both surfaces. The primary advantage of solid etalons are their very compact size. Air-spaced etalons are comprised of two plane parallel plates optically contacted to two glass spacers. The plates have an antireflection coating on their outer surfaces and a high reflection coating on their inner surfaces. Optical contact enables precise control of reflector separation (since there is no glue thickness to consider) and prevents potential adhesive outgassing. Air-spaced etalons are larger than solid etalons, but offer superior thermal stabililty. Our unique, thermally insensitive air-spaced etalons offer the ultimate in frequency stability. They are a completely passive design which use a combination of materials specifically designed to offset thermal expansion. All Spectra-Physics etalons utilize low loss, high efficiency optical coatings to deliver maximum finesse and tightly controlled free spectral range (FSR). Features High finesse Telcordia compliant Volume manufacturing Available for C and L bands Applications Wavelength lockers Interleavers Dispersion compensators 1335 Terra Bella Avenue, Mountain View CA 94043 Toll free 1-888-735-5774 Telephone +1-650-966-54 4 4 e-mail: telecomsales@splasers.com Etalons Spectral Performance AIR SPACED SOLID Thermally insensitive Free Spectral 100 GHz 50 GHz 100 GHz 50 GHz 100 GHz 50 GHz +/-9 MHz +/-2 MHz +/-9 MHz +/-2 MHz +/-5 MHz +/-3 MHz 0.6-1500 0.6-1500 0.6-1500 0.6-1500 0.6-1500 0.6-1500 Range Free Spectral Tolerance Finesse Other Parameters Thermal Stability +/-9 GHz +/-5 GHz (0-70 C in air) Material ULE/Silica ULE/Silica or or Zerodur/Silica Zerodur/Silica IAD IAD Coating Process +/-5 MHz (0-70 C in air) +/-2 MHz (0-70 C in air) Zerodur/Silica/BK7 +/-55 GHz (0-70 C in air) Zerodur/Silica/BK7 IAD (0-70 C in air) Fused Silica Fused Silica IAD IAD Typical Spectral Performance -1 -3 Transmission (dB) -5 -7 -9 -11 -13 -15 191100 191200 191300 191400 191500 191600 191700 191800 Frequency (GHz) Contact Sales for additional product information. Due to our continuous improvement program, specifications are subject change without notice. 276PSSPT-02 5M4/1 191900 192000 +/-55 GHz (0-70 C in air) 192100 IAD