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Pitch-Reducing Optical Fiber Array

Photonics.com
Mar 2012
Chiral Photonics Inc.Request Info
 
PINE BROOK, N.J., March 8, 2012 — The PROFA (pitch-reducing optical fiber array) product line is an evolution of Chiral Photonics Inc.’s spot size converting interconnects that interface standard optical fibers with photonic integrated circuits.

The multichannel 2-D dense fiber array is best suited for vertical interfacing to vertical-cavity surface-emitting lasers, receivers or vertically coupled gratings. A monolithic glass structure incorporating an adiabatic taper and integrated pigtails brings multiple optical channels close together for efficient, space-saving coupling. The technology reduces channel pitch while tailoring the numerical aperture of individual channels to customer needs.

The company is offering a 50-plus channel device with single-mode waveguides in the visible spectral range with channel spacing of <40 μm.

Traditional solutions for coupling photonic integrated circuits use gradient-index lens technology, lensed fibers with V-grooves or other solutions that rely on air gaps and complex production alignment techniques. These techniques are suitable for moderate channel densities but pose substantial thermal expansion/excursion and related reliability challenges. An additional limitation of a conventional lens-based coupling technique is its inability to control channel spacing and numerical aperture independently.


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