Gradient Index(GRIN) Micro Lens
 AC
Photonics' ALC® is a micro gradient index (GRIN)
lens. It is designed for use in demanding telecommunication
and data communication applications. The nominal numerical
aperture (NA) of ALC family is 0.46. ALC lenses may have different
dimensions and surface finishes. The diameter of ALC lenses
is 1.0 mm or 1.8mm. Because of its very low insertion loss,
ALC lense can be used in optical isolators, collimators, coupling,
and WDM devices.
Features |
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Applications |
- Low Insertion Loss
- Low Price
- Drop-in Replacement for SELFOC Lens and C-lens
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- Optical Isolators
- Optical Switches
- Collimators
- Coupling
- WDM Devices
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Specifications
Grade |
Premium |
A Grade |
| Insertion Loss (at 1550nm) (dB) |
< 0.15 |
< 0.2 |
| Polarization Reservation |
0.99 |
| Max. Pitch (P) |
0.5 |
| Material |
Proprietary GRIN optical glass material |
| Lens Length (Z) Tolerance |
±2.5% |
| Lens Diameter Tolerence |
+ 0.005/ - 0.010 |
| Thermal Expansion Coefficient |
10
X 10-6/°C |
| Operation Temperature (°C) |
200 |
| Surface Quality |
No defects, scratches greater than 0.03nm, no more than 3 defects or scratches from 0.01mm to 0.03mm. No chips within 90% of the lens diameter |
| Young's Modulus |
6,000
- 8,000 Kgf/mm2 |
Dimensions
D: Dimeter of the lens.
a: The angle ofone end of the lens.
Z: Lens length
Ordering
Information
ALC
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Diameter
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Pitch
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Wavelength
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Coating
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Angle
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10=1.0mm
18=1.8mm |
230=0.23p
250=0.25p
245=0.245p |
1310=1310nm
1550=1550nm |
AR2=Both
sides AR Coated
AR1=One side AR Coated
NC0 = Not coated. |
8=8
deg.
6=6 deg. |
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