Lensed fibers are monolithic devices consisting of a rod lens or a plano-
convex rod lens that is fusion spliced to a single mode fiber. Applications
include Datacom and Medical Applications such as Optical Coherence
Tomography. Three different types are available for both SMF and PMF at
wavelengths in the range from 450 nm to 1650nm:
Focusing Lensed fiber
It focuses the optical beam for fiber to chip coupling. The relatively high working
distance is the key benefit of this product. It greatly reduces interference problems
and also prevents potential chip damage, because the distance between fiber and
chip is large. Two standard products are available for use in the 1550 nmrange, see
table. Custom: upon request.
Collimating Lensed Fiber
It collimates the optical beam for fiber to fiber coupling. Application: insertion of
devices like MEMS, thin films, and liquid crystal cells, …75 µm ±15 µm120 µm
±15 µm45 µm ±5 µm3.0 µm ±0.5 µm4.0 µm ±0.5 µm4.7 µm ±0.3 µmWorking
distance (Wd)Mode field diameter (MFD)Three standard product is are available
for use in the 1550 nm range, see table. Custom: upon request.
MFD Adapting Lensed Fiber
It adapts the mode field diameter of a fiber to the desired output mode field
diameter. This means that the mode field diameter can be tailored to your
application: MEMS based devices, opticalmonitoring devices, micro-optic
components, etc. Four standard products are available for use in the 1550 nm
range, see table. Custom: upon request.
Our lensed fibers can be handled in the same way as ordinary optical fibers, since
the rod lens diameter is equal to the fiber diameter. This reduces material and
assembly costs in optical components as neither a collimator assembly nor a fiber
to lens alignment is required. The lensed fibers can be assembled in V-groove
arrays and ferrules like ordinary fibers.
Prices range from $100/each for standard products upwards of $200/each
for custom products. For more info, contant KachaOptics@pacbell.net


