Transmission gratings operate to angularly disperse incident light into a spectrum. LightSmyth’s transmission gratings utilize state-of-the-art design and precise lithographic wafer-scale fabrication to deliver record-breaking optical performance combined with low cost, providing your optical systems with a powerful competitive edge. These gratings provide the world’s best combination of highest diffraction efficiency, low PDL and highly competitive pricing.
Measured Diffraction Efficiency Curves
Advantages:
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Exceptional diffraction efficiency
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Ultra-low polarization-dependent loss
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Special design for broad passband and low angular sensitivity
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Uses only fused silica and highly robust dielectric materials
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No polymers or organics are used; Telcordia-qualified
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Each grating is a master; ultra-low scatter
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Extremely precise line density (line density uniformity <0.001 lines/mm)
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Highly competitive pricing
Applications:
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Optical telecommunications (ROADM, WSS, WDM MUX/DEMUX)
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Pulse compression of pico- and femto-second pulses
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High power lasers
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Spectral beam combining
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Remote optical sensors and spectroscopy
Specifications below are for stock gratings that are available immediately. Transmission gratings of similar performance with other line densities, operating spectral bands, input/output beam geometries and substrate sizes can be supplied.
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Polarization-Independent Telecom Transmission Gratings |
|
S/N prefix |
Wavelength Range (nm) |
Line Density (Lines/ mm) |
Angle of Incidence1 (°) |
Diffraction Efficiency2 (%) |
Polarization- Dependent Loss2 (dB) |
Spectral Plot |
|
T-1000C |
1525-1565 |
1000.00 |
50.6+1 |
> 93 |
< 0.25 |
Spectral Plot |
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T-966C |
1525-1565 |
966.18 |
48.3+1 |
> 94 |
< 0.2 |
Spectral Plot |
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T-940C |
1525-1565 |
940.07 |
46.5+1 |
> 94 |
< 0.2 |
Spectral Plot |
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T-940L |
1570-1610 |
940.07 |
48.4+1 |
> 94 |
< 0.2 |
Spectral Plot |
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T-940CL |
1526-1610 |
940.07 |
47.5+1 |
> 92 |
< 0.2 |
Spectral Plot |
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High Dispersion Single Polarization Telecom Transmission Gratings |
|
P/N prefix |
Wavelength Range (nm) |
Line Density (Lines/ mm) |
Angle of Incidence1 (°) |
Diffraction Efficiency2 (%) |
Operational Polarization |
Spectral Plot |
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T-1200C |
1529-1568 |
1201.20 |
68+0.5 |
> 90 |
S |
Spectral Plot |
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T-1166L |
1572-1612 |
1166.18 |
68+0.5 |
> 90 |
S |
Spectral Plot |
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Polarization Independent Datacom Transmission Gratings |
|
P/N prefix |
Wavelength Range (nm) |
Line Density (Lines/ mm) |
Angle of Incidence1 (°) |
Diffraction Efficiency2 (%) |
Polarization-Dependent Loss (dB) |
Spectral Plot |
|
T-1702-895 |
850-940 |
1702.13 |
49.5±1 |
≥ 90 |
< 0.3 |
Spectral Plot |
|
T-1200-1310 |
1275-1345 |
1201.20 |
52.0±1 |
≥ 90 |
< 0.3 |
Spectral Plot |
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Notes: |
1 Gratings will be highly efficient over larger range of angles – please inquire. |
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2 Determined from parabolic fit of efficiency as a function of wavelength for s- and p- polarization, worst case in the wavelength range. |
