Athermal NIR Narrow Bandpass Filters
Multi-cavity narrow bandpass filters with reduced angle sensitivity and greater temperature stability for LIDAR and optical communication applications.
Responding to increased demand for near-infrared narrowbands that exhibit low thermal shift, Omega is pleased to announce our latest 4-cavity Fabry-Perot narrowband filters for demanding LIDAR and optical communications applications. These filters are fabricated from hard oxide materials and matched to the substrate to create their high thermal stability. The design also reduces angle sensitivity, providing improved off-angle performance.
Steep edge slopes allow these narrowbands to reject ambient light as well as adjacent laser lines, a requirement for freespace optical communication in the dense C-band channels.
Please contact us to request a quote for your specifications.
Technical Data Sheet
- Ultra-Narrow Bandpass Filters for Infrared Applications with Improved Angle of Incidence Performance
Thomas D. Rahmlow ; Markus Fredell ; Sheetal Chanda and Robert Johnson, "Ultra-narrow Bandpass filters for infrared applications with improved angle of incidence performance", Proc. SPIE 9822, Advanced Optics for Defense Applications: UV through LWIR, 982211 (May 18, 2016); doi:10.1117/12.2225113; http://dx.doi.org/10.1117/12.2225113
ITU C-Band Laser Bandpass Filter Sets
- The ITU C-Band or erbium window covers the spectral range of 1530 to 1565 nm.
- The ITU Grid places 100 laser channels across this band.
- Omega Optical can provide laser isolation band pass filters at any of these wavelengths.
- Spectral stability over temperature range of -60 to +80° C
- Multi-cavity designs for flat transmission peak and sharp transition to deep blocking
- > OD 4 from 1 to 2.5 μm
- Broad off-band rejection
- Narrow bandwidths from 1 to 5nm
- Reduced spectral shift with AOI
- Standard wavelengths for common laser lines and C-band optical communication channels
- Custom wavelengths available
- Custom sizes available
- High physical durability
- Inspection to Mil Spec, including temperature influence and shock
- Spectral characterization over angle and temperature
- Freespace Optical Communications
- Laser Cleanup
- Autonomous Vehicle Applications
- Remote Sensing
- Chemical/Gas Sensing