Graient Index(GRIN) Micro Lens

ACP’s 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		Applications
Low Insertion Loss Low Price Drop-in Replacement for SELFOC Lens and C-lens		Optical Isolators Optical Switches Collimators Coupling WDM Devices

Performance Specifications

Parameter	Specifications
Grade	P	A
Insertion Loss (at 1550nm)	≤ 0.15dB	≤ 0.20dB
Polarization Reservation	0.99
Pitch (Max.)	0.5P
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
Operating Temperature	200°C
Surface Quality	HI 1060
Fiber Length (Min.)	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

Ordering Information


ALC	Diameter	Pitch	Wavelength	Coating	Angle
	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.