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Back-Loading, Collet-Style Fiber Chuck (HFC005)

This traditional fiber chuck is designed to accept fibers with diameters up to 200 µm once the coating (buffer) has been stripped. The fiber is fed through the length of the chuck and then a collet mechanism is used to secure the fiber in place. Therefore, the fiber needs to be stripped and fed through the holder prior to being cleaved, thus preventing the fiber endface from being damaged. The HFC005 has the same industry-standard dimensions as the HFC007 presented below [Ø6.35 mm (Ø0.25") x 60 mm (2.36") long]. This fiber chuck is ideal for use with the HFR001 Rotator presented below.

Side-Loading Fiber Chuck (HFC007)

This industry-standard fiber chuck is designed to accept fibers with diameters up to 200 µm once the coating (buffer) has been stripped. The fiber is loaded from the side, which makes it possible to strip and cleave the fiber prior to loading. A spring clip secures the fiber in place. However, please note that this spring mechanism does not provide a sufficient clamping force to keep the fiber from rotating when placed inside a rotator such as our HFR001 presented below. The chuck measures 60 mm (2.36") in length and has a diameter of 6.35 mm (0.25").

Fiber Chuck Mounting Block (HFG001)

The HFG001 Mounting Block is designed to accept the industry standard fiber chucks. The double bore ensures that two lines of contact are maintained along the length of the 1/4" diameter chuck. A nylon tipped set screw is used to apply the pressure required to firmly hold the fiber chuck in place.

Deck Height is the distance from the base of the mounting surface of an optical table or breadboard to the top mounting surface of the stage. There are two standard deck heights: 62.5mm for the MBT, RollerBlock, and Max300 series stages or 112.5mm deck height for the Max600 and NBM series stages. A wide range of riser blocks and plates are available to accommodate for variations when stacking stages on top of each other.

Optical Axis, also referred to as Beam Height, is the nominal height at which the beam should pass over the stage and through a given optical component or device. There are two standard optical axis heights: 75mm for the MBT, RollerBlock, and Max300 series stages or 125mm deck height for the Max600 and NBM series stages. Most standard accessories use a 12.5mm optical axis/beam height.

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Features

• High Stability Flexure Pitch and Yaw Fiber Chuck Holder
• ±3° Pitch and Yaw Adjustable via Back Plate Adjuster Screws

The HFG003 Flexure Mount provides ±3° of pitch and yaw adjustment and is designed to accept our 1/4" diameter fiber chucks (HFC005 and HFC007). When working with low numerical aperture (NA) optical fibers, the angular adjustment of the optical fiber with respect to the incoming laser beam can be critical to optimizing the coupling efficiency. Additionally, if small core fibers are being used, the high divergence angle of tightly focused laser beams can also require careful angular alignment to ensure the input NA of the fiber is not exceeded.

Deck Height is the distance from the base of the mounting surface of an optical table or breadboard to the top mounting surface of the stage. There are two standard deck heights: 62.5mm for the MBT, RollerBlock, and Max300 series stages or 112.5mm deck height for the Max600 and NBM series stages. A wide range of riser blocks and plates are available to accommodate for variations when stacking stages on top of each other.

Optical Axis, also referred to as Beam Height, is the nominal height at which the beam should pass over the stage and through a given optical component or device. There are two standard optical axis heights: 75mm for the MBT, RollerBlock, and Max300 series stages or 125mm deck height for the Max600 and NBM series stages. Most standard accessories use a 12.5mm optical axis/beam height.

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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.