Features	Applications
High Return Loss	Fiber Sensor
High Extinction Ratio	Fiber Amplifier
Low Insertion Loss	Fiber Lasers
Excellent Environmental Stability	Research

Performance Specifications 

Parameters	Unit	Values
Center Wavelength (λc)	nm	1310, 1480 or 1550
Operating Wavelength Range	nm	±20
Typ. Insertion Loss	dB	0.3
Max. Insertion Loss	dB	0.5
Min. Return Loss	dB	50
Min. Extinction Ratio (Slow Axis of Port 1 is aligned to Slow Axis of Port 2, for PM-PM Type, at 23°C)	dB	20
Min. Extinction Ratio (Slow Axis of Port 2 is aligned to Fast Axis of Port 1, for PM-PM Type, at 23°C)	dB	20
Rotation Angle at 23°C, λc	°C	45±1
Max. Optical Power (CW)	mW	500
Max. Tensile Load	N	5
Operating Temperature	°C	-5 to +70
Storage Temperature	°C	-40 to +85

*Above specifications are for devices without connectors.
*For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower and ER will be 2dB lower.
*The PM fiber and the connector key are aligned to the slow axis.

Size

Ordering Information 

ILF-①①-②②-③③-④④-⑤
①①: Wavelength	③③: Fiber Jacket on Port 1 & 2	④④: Fiber Type on Port 1 & 2
31 - 1310nm	B - 250um Bare Fiber	1 - PM Panda Fiber
48 - 1480nm	D - 400um Bare Fiber	2 - SMF-28e Fiber
55 - 1550nm	L - 900um Loose Tube
SS - Specify	S - Specify	⑤: Fiber Length
		0.8 - 0.8m
②②: Connector Type on Port 1 & 2		S - Specify
1 - FC/UPC
2 - FC/APC
3 - SC/UPC
4 - SC/APC
N - None
S - Specify