Etalons
- Standard 2x2mm fused silica etalons:
- 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, Gire-Tournois(GT) and 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, Gire-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.
Applications
- Wavelength references
- Wavelength lockers
- Periodic optical filters
- Interleavers
Standard Nano-Precise Solid Etalon Characteristics
| Model Number |
ET05043-CL
|
ET10043-CL
|
ET05066-CL
|
ET05071-CL
|
| Operating Wavelength | 1520–1630 nm | 1520–1630 nm | 1520–1630 nm | 1520–1630 nm |
| Free Spectral Range (FSR) | 50 GHz | 100 GHz | 50 GHz | 50 GHz |
| FSR Tolerance | ±0.0025 GHz | ±0.0025 GHz | ±0.0025 GHz | ±0.0025 GHz |
| Single-Surface Reflectance | 43%±2% | 43%±2% | 66%±2% | 71%±2% |
| Finesse | 3–4 | 3–4 | 7-8 | 9 |
| Angle of Incidence | 0° | 0° | 0° | 0° |
| Substrate Material | Fused silica | Fused silica | Fused silica | Fused silica |
| Scratch/Dig | <20/10 | <20/10 | <20/10 | <20/10 |
| Maximum Chipout | 150 µm | 150 µm | 150 µm | 150 µm |
| Size | 2 x 2 mm2 | 2 x 2 mm2 | 2 x 2 mm2 | 2 x 2 mm2 |
| Operating Temperature* | 25 °C | 25 °C | 25 °C | 25 °C |
| Price** | $150 | $150 | $180 | $180 |
** Quantity pricing also available.
Custom Nano-Precise Solid Etalon Characteristics
| Model Number |
Custom
|
| Operating Wavelength | User specified |
| Free Spectral Range (FSR) |
25 GHz 50 GHz 100 GHz (Other FSR available) |
| FSR Tolerance | ±0.001 GHz (minimum) |
| Single-Surface Reflectance | Up to 90% |
| Finesse | Up to 20 ** |
| Angle of Incidence | User specified |
| Substrate Material | Fused silica, optical-grade silicon, LaSFN9, MgF2, Zerodur |
| Scratch-Dig | <20/10 |
| Maximum Chipout | From 20 µm |
| Size | 1 mm x 1 mm (minimum) |
| Operating Temperature* | User specified |
| Typical Lead Time | 4-6 weeks |