Laser Diode to Fiber Coupler - Pigtail Style
Description
The laser diode to fiber couplers from OZ Optics come in a compact and rugged package, offering optimal coupling efficiency. They can be purchased prealigned, with the diode already installed, or as a kit for customer assembly using their own diode. The assembly process is straightforward and can be completed in less than twenty minutes. A complete alignment kit, including tools and video instructions, is available separately.
These couplers are designed to work with various diode case sizes and wavelengths ranging from 400nm to over 2050nm. They are compatible with multimode, single mode, and polarization maintaining fibers. One advantage of the design is that if the diode fails, it can be easily replaced while reusing the rest of the optics, and the device can be realigned for optimal coupling.
There are two versions of tilt-adjustable laser diode to fiber couplers: receptacle style and pigtail style. The pigtail style couplers have the fiber pigtailed directly onto the coupler, providing higher coupling efficiencies, lower backreflection levels, and better stability. The output fiber can be terminated with different connectors as desired.
The couplers are available in different diameters, including standard 0.79" and larger 1.3" packages for improved coupling efficiencies and compatibility with larger diode case sizes. Smaller diameter options are also available for specific diode can sizes.
Optional features include couplers with built-in isolators to reduce backreflection effects, blocking screws to attenuate the output beam for precise power control, and couplers with polarizers or polarization rotators in the middle.
The product is offered with different part numbers and specifications, including wavelength, coupling efficiency, fiber type, and connector options. The specifications and ordering information for standard parts and custom parts are provided in the description.
Laser Diode to Fiber Coupler - Pigtail Style
Specifications |
|
|---|---|
| Wavelength Range: | 375nm to 2050nm |
| Fiber Types: | Single mode, multimode, or polarization maintaining fiber |
| Variants: | Receptacle style couplers and pigtail style couplers |
| Diameter Options: | 0.79 |
| Additional Options: | Built-in isolators, blocking screw option, polarizers or polarization rotators |
Features
- Proven design and manufacture
- Available in a variety of standard packaging options
- Covers a wide wavelength range from 375nm to 2050nm
- Compatible with single mode, multimode, or polarization maintaining fiber
- Rugged design for durability
Applications
- Fiber Optic Communications
- Optical Alignment Systems
- Process Control
- Optical Sensor Applications
- Medical Apparatus
- Imaging Systems
- Test and measurement systems
- OCT systems
For pricing, technical or any other questions please contact the supplier
- No registration required
- No markups, no fees
- Direct contact with supplier
Contact Supplier
How to order?
-
Ships from:
Canada
-
Sold by:
-
On FindLight:
since 2015
Frequently Asked Questions
A laser diode coupler is a device used to couple laser diode light into a fiber optic cable.
The wavelength range of the coupler is 375nm to 2000nm.
Single mode, multimode, and polarization maintaining fibers can be used with the coupler.
OZ Optics normally orients the “E” field of the laser diode (which is parallel to the plane of the junction) to the keyway on the receptacle, this is usually the “slow” axis of the PM fiber. OZ can orient the laser diode to either one of the fiber’s polarization axes.
No. This is one of the main advantages of the OZ Optics adjustable tilt design. The lenses and optical fibers can be easily reused. Simply put the new diode into a new laser diode holder, collimate it using the old collimating lens assembly, and focus the collimated beam into the fiber using the old focusing optics.
Yes. First, the laser diode chip should be positioned slightly off center with respect to the collimating lens assembly. This prevents reflections from traveling straight back into the cavity. Secondly, the input end of the fiber can be polished at an angle. Finally, the output end of the fiber can be angle polished, or index-matching gel can be used on the output end of the fiber. By combining these techniques, typical backreflection levels of up to -40dB can be achieved. In addition, backreflection levels as low as -60dB are possible by applying an AR coating to the fiber tips.
No. This is one of the advantages of the OZ Optics design. There is no need for tight tolerances on the diode chip location, as small offsets in the lateral position of the laser diode chip can be easily compensated for at the focusing optics, using the patented tilt adjustment technique.
The laser diode chip must first be attached to a laser diode holder. The laser diode and laser diode holder can then be attached to the collimating lens assembly and focusing optics. NOTE: OZ Optics has several different types of laser diode holders already in stock, and custom diode holders can be manufactured to meet your needs. Contact OZ Optics for further information.
Yes. Couple the light into a single-mode or polarization-maintaining fiber using a laser diode to fiber coupler. The fiber acts as an excellent spatial filter, giving an almost ideal Gaussian output beam. Wavefront distortion can be as low as λ/50. The fiber output can then be easily collimated using a lens. OZ Optics offers a wide variety of fiber optic collimators for this purpose.
Yes. Optical amplifiers emit a little light in both directions when operated at low currents. This light can be collimated, and then coupled into an optical fiber. By doing this on both sides of the coupler, the amplifier can be pigtailed.
A laser diode to fiber coupler is a device that allows for efficient coupling between a laser diode and an optical fiber.
Yes, you can purchase a laser diode to fiber coupler that comes prealigned with the diode already installed.
The assembly process for the laser diode to fiber coupler can be completed in less than twenty minutes.
Yes, the laser diode to fiber couplers are available in different diameters, including standard 0.79" and larger 1.3" packages for improved coupling efficiencies and compatibility with larger diode case sizes.
These couplers are compatible with multimode, single mode, and polarization maintaining fibers.