Features

• 10 µm Maximum Eccentricity Over 360° Range
• Graduated Knob (5° Increments)
• Easy-to-Load V-Groove Design
• Swing Arm with Magnetic Clamping Force
• Clamps on Fiber Cladding to Minimize Offset Errors
• Locking Setscew

The HFR007 can rotate a single mode fiber about the center of the fiber core with a maximum eccentricity of 10 µm when rotated through 360º. The precision fiber rotator is pre-adjusted for fibers with an outer cladding diameter of 125 µm (with the buffer coating removed). Fibers are easily loaded into the V-groove on the fiber rotator and quickly secured by lowering the swing arm that is magnetically held in place. The force used to secure the fiber is adjustable so that the stress induced birefringence can be controlled. The precision fiber rotator allows for top loading of the fiber and provides smooth, continuous, angular rotation through 360°.

An engraved graduated knob with 5° increments allows the angular position to be set with an accuracy of ~2°. Once the position is set, a locking screw can be used to fix the angular position of the fiber core.

The HFR007 has a 3 mm wide key on the base, making it compatible with our entire line of flexure stages, roll, pitch and yaw platforms, and fixed platforms and brackets. Flexure stage top plates have a central keyway along one or two axes of the stage. This keyway allows all the flexure stage accessories to be accurately placed along the central axis of the stage so that only fine adjustments need to be made to the optical alignment of the system when an accessory is removed and then replaced.

The photo opposite shows a typical application. The HFR007 is mounted to a MBT616 Flexure stage. The fiber rotator holds a fiber, being aligned with a microscope objective fitted to a HCS013 objective holder and mounted on a AMA009 fixed bracket.

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Features

• Smooth, Low-Friction Fiber Rotator
• Designed for 1/4" Fiber Chucks
• RMS-Threaded Mounting Feature Enables Incorporation into Existing Mounts
• Three Nylon-Tipped Set Screws Secure the Fiber Chuck

The HFR001 Fiber Chuck Rotator is designed to hold a standard 1/4" fiber chuck such as the HFC005 presented above and allows continuous rotation through 360°. It has a male RMS thread, which when mounted in a microscope objective mount (HCS013), can be secured to the top plate of one of our multi-axis flexure stages or fixed brackets. The phosphor-bronze and Teflon bearing in the fiber chuck rotator provides smooth, low-friction rotation for precise angular orientation of a polarization-maintaining fiber. The lateral offset during rotation is typically less than 20 µm; this relatively small offset allows a single mode fiber at Ø1.5 µm to be rotated by about 90 degrees before requiring compensation with the y and z adjustments. The HFR001 can also be used with the a roll/pitch platform (e.g., AMA027) to launch light into polarization-preserving fibers. This combination provides 360° of initial fiber rotation with 8° of ultra-fine rotation.

The photo to the right shows a typical application. The HFR001 is held in a HCS013 Objective Holder and mounted to a MBT602 Flexure Stage. The fiber chuck rotator holds the fiber, whose output is aligned with the microscope objective, which is fitted to the objective holder and mounted on a AMA009 fixed bracket.

Please note that the HFC007 fiber chuck featured above should not be used with the HFR001 fiber rotator, as it does not provide sufficient clamping force to prevent rotation of the fiber once placed inside the rotator.