The Fiber-to-Fiber Coupling System consists of the FiberBench Base with two FiberPorts and two (input
& output) FiberCables (distal end is cleaved). The Fiber-to-Fiber Coupling System is "empty", containing no Optical Component Modules, and is used for coupling light from one fiber to another across an open air-gap.
In all FiberBench Coupling Systems using OFR PM FiberCables, both the slow axis and the FC receptacle keyway are vertical. Both the plane of polarization and the fiber stress rods are vertical.

A major feature of OFR FiberBench Coupling Systems is stability. Transmittance remains constant after temperature change, shock and vibration far greater than experienced in typical laboratory use.

STANDARD WAVELENGTHS (nm)      633    780    850 1310      670    810    980 1550      690    830    1064

All FFB -X series Fiber-Fiber couplers are OFR aligned to the included input and output fiber cables. Default input/output fibers are 1m in length and do not include fiber connectors on the distal ends of the fiber. Connectors can be added to the distal ends. The input and output fiber cables can be removed and reattached without affecting overall insertion loss. If you change fiber cables from the OFR provided ones the Fiber-Fiber coupler may not maintain alignment. Please contact OFR to inquire about realigning.

Permanent Pigtailed Fiber Couplers

All FFB -Y series Fiber-Fiber couplers are aligned with permanently attached input and output fibers. Default input/output fibers are 1m in length and do not include fiber connectors. Connectors can be added to the distal ends. The -Y versions are ideal for production environments where you want to make certain that users can not chage the alignment of the system. Coupling into and out of the coupler can be accomplished by either using FC mating collers with connectorized fibers or by fusion splicing to the FiberBench.

Variable Delay Lines

Variable Delay Lines A Variable Delay Line is a modified FiberBench that is actually a stainless steel precision translation stage on which are mounted two FiberPorts.  Used in applications requiring a variable optical path length, the VDL Variable Delay Line has a precision z-axis translation slide with micrometer actuator. With the VDL it is possible to control with high resolution the air-path length of the collimated beam between the FiberPorts. In order that the system retain the inherent stability of all FiberBenches, the OFR VDL Variable Delay Line is designed to eliminate backlash and cross-talk between axes, and to repeat within 1 µm (~3.3 f-s) anywhere over its travel range.