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Model PROFA -Pitch Reducing Optical Fiber Array – One-Dimensional (1D)
Unlike typical fiber arrays, PROFAs provide high density coupling that, for example, minimizes the valuable chip real estate needed for optical input/output (I/O) for fiber-to-chip applications. PROFAs can provide spot size conversion between small cross-section, chip-based waveguides and standard optical fibers, for example. PROFAs can also maintain, or even increase, mode field sizes, independent of changing channel-to-channel spacing, as might be critical for high power applications. PROFA1Ds are available as single-channel device or as linear arrays up to six channels. PROFA1Ds are typically used for chip edge coupling to waveguides, for example, with approximately 2 μm diameter mode field sizes.
Two-dimensional (2D) PROFAs are typically used for chip surface coupling to vertical grating couplers with mode field diameters of approximately 6 or 10 μm or to chip-based devices such as VCSELs or photodiodes. Standard PROFA2Ds are available as hexagonal lattice arrays with up to 91 channels.
Other mode field sizes and lattice configurations can be addressed with custom PROFAs.
PROFAs are also used within PIC probing and coupling solutions which you can implement or we can provide.
Pitch Reducing Optical Fiber Arrays (PROFAs) provide low loss, high density coupling for a myriad of applications, including:
- Photonics integrated circuit (PIC) probing and packaging
- Multicore fiber fanouts
- Space division multiplexing
- Optical switches
- Pump-signal combiners
- Endoscopy
- Optical Probes
- Shape sensing
- Fiber optic gyroscopes
- Multichannel vacuum feedthroughs
- High channel count interfaces
Form Factor/High Density: Typical lenses cannot be packed closer than 125 microns, compromising the inherent density achievable on-chip. Arrayed PROFAs can feature much tighter spacing.
Polarization: Many waveguides are polarization sensitive and maintaining polarization through a lens to small waveguides is challenging, if not impossible.
Robust connection: PROFAs are intended to be butt coupled to PICs. Eliminating the air gap minimizes the effects of thermal excursions in the package and dust that can make its way into the optical path. The PROFA’s monolithic, all-glass construction enables sealing via adhesives or glass or solder (with metallization) for hermeticity, as needed.
- Other wavelengths available upon request
- Measured as 1/e2 intensity
- Polarization extinction ratio, for PM device
- Measured frorn fiber pigtail to device endface, per channel
- Intrinsic to device
- Measured relative to “perfect array” channel position
- Other pigtails (e.g. non-PM), connectorization and other pigtail lengths available upon request
- Please speak to us about your custom package and splicing needs
- The Holder Compatible package provide a 6.35 mm shaft compatible with standard fiber chuck holding products