Linear Transmittance Filters
Linear transmittance filters are used for wavelength identification applications, employing a transmittance that changes linearly over a specified wavelength range. Their transmittance must be monotonic to provide a one-to-one correspondence between the filter transmittance and a given wavelength.
Iridian Linear Transmittance Filters Advantage:
Iridian is experienced in the design and manufacture of numerous linear transmittance curves. They feature low etalon ripple, custom slope and dynamic ranges.
Linear Transmittance Filters
Custom Linear Transmittance Filters
In addition to the standard Linear Transmittance Filters above, Iridian can custom-manufacture these filters to your specifications.
LTF001: C Band (Negative Slope)
Part Number: ZZ000221
This filter has a transmittance that monotonically decreases across the C-Band.
Product Information:
| Optical Specifications |
| Wavelength Range (nm) |
1520 ~ 1570 |
| Dynamic Range (%) |
10 ~ 90 |
| Linearity Tolerance (%) |
± 1.75 |
| Angle of Incidence (degrees) |
3 |
| Angle Tuning (degrees) |
2 ~ 5 |
| Polarization Dependent Loss (PDL) (dB) |
< 0.1 |
| Physical Specifications |
| Filter Size (mm2) |
(1.5 x 1.5) ± 0.1 |
| Filter Thickness (mm) |
1.0 ± 0.25 |
| Wedge Angle (degrees) |
0.4 |
| Reliability |
| Environmental Testing |
Telcordia GR1221 |
| Mechanical Durability |
Telcordia GR1221 |
|
LTF002: C Band (Positive Slope)
Part Number: ZZ000222
This filter has a transmittance that monotonically increases across the C-Band
Product Information:
| Optical Specifications |
| Wavelength Range (nm) |
1520 ~ 1570 |
| Dynamic Range (%) |
10 ~ 90 |
| Linearity Tolerance (%) |
±1.75 |
| Angle of Incidence (degrees) |
3 |
| Angle Tuning (degrees) |
2 ~ 5 |
| Physical Specifications |
| Filter Size (mm2) |
(1.5 x 1.5) ± 0.1 |
| Filter Thickness (mm) |
1.0 ± 0.25 |
| Wedge Angle (degrees) |
0.4 |
| Reliability |
| Environmental Testing |
Telcordia GR1221 |
| Mechanical Durability |
Telcordia GR1221 |
|
LTF003: 7 nm Range (Negative Slope)
Part Number: ZZ000312
The transmittance of this filter is designed to decrease monotonically across 7nm for wavelengths covering the C- and L-bands.
Product Information:
| Optical Specifications |
| Wavelength Range (nm) |
1554.5 ~ 1561.5 |
| Dynamic Range (%) |
80 |
| Linearity Tolerance (%) |
±10% |
| Angle Tuning (degrees) |
1 ~ 3 |
| Operating Temperature Range (oC) |
-10 ~ 75 |
| Storage Temperature Range (oC) |
-40 ~ 85 |
| Physical Specifications |
| Filter Size (mm2) |
(1.5 x 1.5) ± 0.1 |
| Filter Thickness (mm) |
1.0 ± 0.25 |
| Wedge Angle (degrees) |
0.4 |
| Reliability |
| Environmental Testing |
Telcordia GR1221 |
| Mechanical Durability |
Telcordia GR1221 |
|
LTF080: C&L Bands (Positive Slope)
Part Number: ZZ000223
This filter has a transmittance that increase monotonically across the C- and L-bands.
Product Information:
| Optical Specifications |
| Wavelength Range (nm) |
1520 ~ 1620 |
| Dynamic Range (%) |
10 ~ 90 |
| Linearity Tolerance (%) |
± 1.75 |
| Angle of Incidence (degrees) |
3 |
| Angle Tuning (degrees) |
2 ~ 5 |
| Physical Specifications |
| Filter Size (mm2) |
(1.5 x 1.5) ± 0.1 |
| Filter Thickness (mm) |
1.0± 0.25 |
| Wedge Angle (degrees) |
0.4 |
| Reliability |
| Environmental Testing |
Telcordia GR1221 |
| Mechanical Durability |
Telcordia GR1221 |
|
LTF081: C&L Bands (Negative Slope)
Part Number: ZZ000224
This filter has a transmittance that decreases monotonically across the C- and L-bands.
Product Information:
| Optical Specifications |
| Wavelength Range (nm) |
1520 ~ 1620 |
| Dynamic Range (%) |
10 ~ 90 |
| Linearity Tolerance (%) |
±1.75 |
| Angle of Incidence (degrees) |
3 |
| Angle Tuning (degrees) |
2 ~ 5 |
| Physical Specifications |
| Filter Size (mm2) |
(1.5 x 1.5) ±0.1 |
| Filter Thickness (mm) |
1.0 ± 0.25 |
| Wedge Angle (degrees) |
0.4 |
| Reliability |
| Environmental Testing |
Telcordia GR1221 |
| Mechanical Durability |
Telcordia GR1221 |
|
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