Optical etalon
RoHS, 2x2mm
Precision Photonics
- 50- and 100-GHz nominal free-spectral ranges (FSRs)
- Typical FSR tolerances of ±0.0025 GHz
- 43% and 71% reflectivities (finesses of 3-4 and 7-9)
* Custom parameters available including FSR tolerances down to ±0.001 GHz
* Silicon, air-spaced, VIPA, Gires-Tournois(GT)
* Multi-cavity versions also available
These Fabry-Perot etalons lead the industry with superior free-spectral-range tolerances to as tight as ±0.001 GHz and optical thickness accuracies of ±1 nanometer. They have been supplied to leading OEM customers and researchers worldwide in telecommunications, aerospace, laser research, and defense.
Standard 2x2 mm2 fused silica etalons are available for the 1520–1630-nm wavelength range with 50- and 100-GHz nominal FSR values. Solid silicon, air-gap, Gires-Tournois (GT), VIPA, and multi-cavity versions are also available in a variety of sizes down to 1x1 mm2 and a variety of materials. Multi-cavity versions are bonded using Chemically Activated Direct Bonding™ (CADB®)—an epoxy-free, environmentally robust optical contact that has passed Telcordia qualifications.
We characterize each piece in-house to ensure accuracy in etalon construction and design. Proprietary advanced metrology can measure thicknesses to a precision of one nanometer. Our polishing methods produce optics with a wedge of <40 nm across a 3" diameter. Typical lead times for custom etalons are 4 to 6 weeks.
