|
l
Mates with popular SMA, FC or APC connectors
l
Simplifies collimation of output of single mode fiber
l
Collimated beam diameters range from 0.7-3.55mm
l
Models aligned at 405nm, 543nm, 633nm, 1064nm, 1310nm and 1550nm
1. SMA
Collimation/Coupling Packages
Features:
l Fiber
Collimation for Single Mode Patch Cables with SMA Connectors
l Popular SMA Connectors
l Each
Collimation Package is Factory Aligned
l Simplifies Free-Space Laser to Fiber Coupling
These fiber
collimation packages are pre-aligned to collimate light from an SMA
connectorized fiber with diffraction-limited performance. Because these fiber
collimators have no movable parts, they are compact and not susceptible to
misalignment. Due to chromatic aberration, the effective focal length (EFL) of
the aspheric lens is wavelength-dependent. As a result these collimators will
only perform optimally at the design wavelength. The aspheric lens is
factory-aligned so that it is one wavelength-adjusted focal length away from the
fiber tip when inserted into the collimator. In addition, the aspheric lens has
an AR coating that minimizes surface reflections.
These packages can
also be used to couple a free-space laser beam into an optical fiber. To obtain
a high coupling efficiency, the NA of the patch cable needs to be greater than
or equal to the NA of the collimator, and the diameter of the focused beam needs
to be smaller than the MFD/core of the fiber. Please refer to the
Specs tab for suggested mounting
adapters.
|
ITEM # |
Alignment
Wavelengtha |
AR Coating
(nm) |
Lens
Material |
Db
(mm) |
Θc |
f
(mm) |
Suggested
Adapter |
|
SF671SMA-405 |
405 nm |
395 - 415 (405) |
ECO-550 |
0.7 |
0.041� |
4.02 |
AD11F |
|
SF230SMA-A |
543 nm |
350 - 700 (A) |
S-NPH1 |
0.8 |
0.049� |
4.34 |
AD11F |
|
SF240SMA-A |
543 nm |
350 - 700 (A) |
S-LAL13 |
1.5 |
0.027� |
7.86 |
AD12F |
|
SF220SMA-A |
543 nm |
350 - 700 (A) |
D-K59 |
2.0 |
0.020� |
10.90 |
AD11F |
|
SF260SMA-A |
543 nm |
400 - 600 (A) |
ECO-550 |
2.8 |
0.014� |
15.01 |
AD11F |
|
SF280SMA-A |
543 nm |
400 - 600 (A) |
ECO-550 |
3.3 |
0.012� |
18.07 |
AD11F |
|
SF230SMA-B |
633 nm |
650 - 1050 (B) |
S-NPH1 |
0.8 |
0.056� |
4.43 |
AD11F |
|
SF240SMA-B |
633 nm |
650 - 1050 (B) |
S-LAL13 |
1.5 |
0.031� |
7.93 |
AD12F |
|
SF220SMA-B |
633 nm |
650 - 1050 (B) |
D-K59 |
2.1 |
0.022� |
10.99 |
AD11F |
|
SF260SMA-B |
633 nm |
600 - 1050 (B) |
ECO-550 |
2.8 |
0.016� |
15.15 |
AD11F |
|
SF280SMA-B |
633 nm |
600 - 1050 (B) |
ECO-550 |
3.4 |
0.015� |
18.24 |
AD11F |
|
SF220SMA-1064 |
1064 nm |
1050 - 1075 (1064) |
ECO-550 |
2.4 |
0.032� |
11.17 |
AD11F |
|
SF230SMA-C |
1310 nm |
1050 - 1620 (C) |
S-NPH1 |
0.8 |
0.114� |
4.64 |
AD11F |
|
SF240SMA-C |
1310 nm |
1050 - 1620 (C) |
S-LAL13 |
1.5 |
0.065� |
8.13 |
AD12F |
|
SF220SMA-C |
1310 nm |
1050 - 1620 (C) |
D-K59 |
2.0 |
0.047� |
11.23 |
AD11F |
|
SF260SMA-C |
1310 nm |
1050 - 1620 (C) |
ECO-550 |
2.8 |
0.034� |
15.52 |
AD11F |
|
SF280SMA-C |
1310 nm |
1050 - 1620 (C) |
ECO-550 |
3.4 |
0.028� |
18.67 |
AD11F |
|
SF230SMA-1550 |
1550 nm |
1050 - 1620 (C) |
S-NPH1 |
0.9 |
0.128� |
4.67 |
AD11F |
|
SF240SMA-1550 |
1550 nm |
1050 - 1620 (C) |
S-LAL13 |
1.6 |
0.073� |
8.18 |
AD12F |
|
SF220SMA-1550 |
1550 nm |
1050 - 1620 (C) |
D-K59 |
2.1 |
0.053� |
11.29 |
AD11F |
|
SF260SMA-1550 |
1550 nm |
1050 - 1620 (C) |
ECO-550 |
3.0 |
0.038� |
15.58 |
AD11F |
|
SF280SMA-1550 |
1550 nm |
1050 - 1620 (C) |
ECO-550 |
3.6 |
0.032� |
18.75 |
AD11F |
Features:
l
Fiber Collimation
l
Popular FC/APC Connectors
l
Each Collimation Package is Factory Aligned
l
Simplifies Free-Space Laser to Fiber Coupling
l
Simplifies Fiber Coupled Detection Systems
The SF240APC,
SF260APC, SF280APC, and SF671APC Series of fiber collimation packages are
pre-aligned to collimate a laser beam propagating from the tip of an FC/APC (2.1
mm wide key compatible) connectorized fiber with diffraction-limited performance
at the design wavelength. The receptacle of the housing is angled, and the beam
is aligned with the mechanical axis of the package, as shown in the schematic
above. Because the F200-Series fiber collimators have no movable parts, they are
compact and not susceptible to misalignment. Due to chromatic aberration, the
effective focal length (EFL) of the aspheric lens is wavelength-dependent. As a
result, these collimators will only perform optimally at the design wavelength.
The
aspheric lens is
factory-aligned so that it is one focal length away from the fiber tip when
inserted into the collimator. This distance is equal to the focal length of the
aspheric lens at the design wavelength. In addition, the aspheric lens has an AR
coating that minimizes surface reflections.
These packages can
be used to couple a free-space laser beam into an optical fiber. To obtain a
high coupling efficiency, the NA of the patch cable needs to be greater than or
equal to the NA of the collimator, and the diameter of the focused beam needs
to be smaller than the MFD of the fiber. Please refer to the Technical Specs
for suggested mounting adapters.
The FC/APC
conectorized collimation packages are ideal for systems that are sensitive to
back reflections. APC-Style connectors utilize a ferrule that has an 8� end
face, and in conjunction with an ultra PC polish, provide a return loss Greater
than 60 dB.
We also offer a
line of adjustable collimation packages called
FiberPorts that are
well suited for a wide range of wavelengths. These are ideal solutions for
adjustable, compact fiber couplers. For other collimation and coupling options,
please contact us.
|
ITEM # |
Alignment
Wavelengths |
AR Coating
(nm) |
Lens
Material |
Db
(mm) |
Θc |
f
(mm) |
Suggested
Adapter |
|
SF671APC-405 |
405 nm |
395 - 415 (405) |
ECO-550 |
0.7 |
0.041� |
4.02 |
AD11F |
|
SF240APC-A |
543 nm |
350 - 700 (A) |
S-LAL13 |
1.5 |
0.027� |
7.86 |
AD12F |
|
SF260APC-A |
543 nm |
400 - 600 (A) |
ECO-550 |
2.8 |
0.014� |
15.01 |
AD11F |
|
SF280APC-A |
543 nm |
400 - 600 (A) |
ECO-550 |
3.3 |
0.012� |
18.07 |
AD11F |
|
SF240APC-B |
635 nm |
650 - 1050 (B) |
S-LAL13 |
1.5 |
0.031� |
7.93 |
AD12F |
|
SF260APC-B |
635 nm |
600 - 1050 (B) |
ECO-550 |
2.8 |
0.016� |
15.15 |
AD11F |
|
SF280APC-B |
635 nm |
600 - 1050 (B) |
ECO-550 |
3.4 |
0.014�
|
18.24 |
AD11F |
|
SF220APC-1064 |
1064 nm |
1050 - 1075 (1064) |
ECO-550 |
2.4 |
0.032� |
11.17 |
AD11F |
|
SF240APC-C |
1310 nm |
1050 - 1620 (C) |
S-LAL13 |
1.5 |
0.065� |
8.13 |
AD11F |
|
SF260APC-C |
1310 nm |
1050 - 1620 (C) |
ECO-550 |
2.8 |
0.034� |
15.52 |
AD11F |
|
SF280APC-C |
1310 nm |
1050 - 1620 (C) |
ECO-550 |
3.4 |
0.028� |
18.67 |
AD11F |
|
SF240APC-1550 |
1550 nm |
1050 - 1620 (C) |
S-LAL13 |
1.6 |
0.073� |
8.18 |
AD12F |
|
SF260APC-1550 |
1550 nm |
1050 - 1620 (C) |
ECO-550 |
3.0 |
0.038� |
15.58 |
AD11F |
|
SF280APC-1550 |
1550 nm |
1050 - 1620 (C) |
ECO-550 |
3.6 |
0.032� |
18.75 |
AD11F |
3.
FC/PC Collimation/Coupling Packages
Features
l
Fiber
Collimation Popular FC/PC Connectors
l
Each
Collimation Package is Factory Aligned
l
Simplifies Free-Space Laser to Fiber Coupling
l
Simplifies Fiber Coupled Detection Systems
The SF220FC, SF230FC,
SF240FC, SF260FC, SF280FC, and SF671FC Series of fiber collimation packages are
pre-aligned to collimate a laser beam propagating from the tip of an FC/PC (2.1
mm wide key compatible) connectorized fiber with diffraction-limited
performance. Because the F200-Series fiber collimators have no movable parts,
they are compact and not susceptible to misalignment. Due to chromatic
aberration, the effective focal length (EFL) of the aspheric lens is
wavelength-dependent. As a result, these collimators will only perform optimally
at the design wavelength. The aspheric lens is factory-aligned so that it is one
focal length away from the fiber tip when inserted into the collimator. This
distance is equal to the focal length of the aspheric lens at the design
wavelength. In addition, the aspheric lens has an AR coating that minimizes
surface reflections.
These packages can
be used to couple a free-space laser beam into an optical fiber. To obtain a
high coupling efficiency, the NA of the patch cable needs to be greater than or
equal to the NA of the collimator, and the diameter of the focused beam needs to
be smaller than the MFD of the fiber. Please refer to the Specs tab for
suggested mounting adapters.
We also offer a
line of adjustable collimation packages called Fiber Ports that are well suited
for a wide range of wavelengths. These are ideal solutions for adjustable,
compact fiber couplers. For other collimation and coupling options, please
contact our technical support group.
|
ITEM # |
Alignment
Wavelength a |
AR Coating
(nm) |
Lens
Material |
Db
(mm) |
Θc |
f
(mm) |
Suggested
Adapter |
|
SF671FC-405 |
405 nm |
395 - 415 (405) |
ECO-550 |
0.7 |
0.041� |
4.02 |
AD11F |
|
SF230FC-A |
543 nm |
350 - 700 (A) |
S-NPH1 |
0.8 |
0.049� |
4.34 |
AD11F |
|
SF240FC-A |
543 nm |
350 - 700 (A) |
S-LAL13 |
1.5 |
0.027� |
7.86 |
AD12F |
|
SF220FC-A |
543 nm |
350 - 700 (A) |
D-K59 |
2 |
0.020� |
10.9 |
AD11F |
|
SF260FC-A |
543 nm |
400 - 600 (B) |
ECO-550 |
2.8 |
0.014� |
15.01 |
AD11F |
|
SF280FC-A |
543 nm |
400 - 600 (B) |
ECO-550 |
3.3 |
0.012� |
18.07 |
AD11F |
|
SF230FC-B |
633 nm |
650 - 1050 (B) |
S-NPH1 |
0.8 |
0.056� |
4.43 |
AD11F |
|
SF240FC-B |
633 nm |
650 - 1050 (B) |
S-LAL13 |
1.5 |
0.031� |
7.93 |
AD12F |
|
SF220FC-B |
633 nm |
650 - 1050 (B) |
D-K59 |
2.1 |
0.022� |
10.99 |
AD11F |
|
SF260FC-B |
633 nm |
600 - 1050 (B) |
ECO-550 |
2.8 |
0.016� |
15.15 |
AD11F |
|
SF280FC-B |
633 nm |
600 - 1050 (B) |
ECO-550 |
3.4 |
0.014� |
18.24 |
AD11F |
|
SF220FC-1064 |
1064 nm |
1050 - 1075 (1064) |
ECO-550 |
2.4 |
0.032� |
11.17 |
AD11F |
|
SF230FC-C |
1310 nm |
1050 - 1620 (C) |
S-NPH1 |
0.8 |
0.114� |
4.64 |
AD11F |
|
SF240FC-C |
1310 nm |
1050 - 1620 (C) |
S-LAL13 |
1.5 |
0.065� |
8.13 |
AD12F |
|
SF220FC-C |
1310 nm |
1050 - 1620 (C) |
D-K59 |
2 |
0.047� |
11.23 |
AD11F |
|
SF260FC-C |
1310 nm |
1050 - 1620 (C) |
ECO-550 |
2.8 |
0.034� |
15.52 |
AD11F |
|
SF280FC-C |
1310 nm |
1050 - 1620 (C) |
ECO-550 |
3.4 |
0.028� |
18.67 |
AD11F |
|
SF230FC-1550 |
1550 nm |
1050 - 1620 (C) |
S-NPH1 |
0.9 |
0.128� |
4.67 |
AD11F |
|
SF240FC-1550 |
1550 nm |
1050 - 1620 (C) |
S-LAL13 |
1.6 |
0.073� |
8.18 |
AD12F |
|
SF220FC-1550 |
1550 nm |
1050 - 1620 (C) |
D-K59 |
2.1 |
0.053� |
11.29 |
AD11F |
|
SF260FC-1550 |
1550 nm |
1050 - 1620 (C) |
ECO-550 |
3 |
0.038� |
15.58 |
AD11F |
|
SF280FC-1550 |
1550 nm |
1050 - 1620 (C) |
ECO-550 |
3.6 |
0.032� |
18.75 |
AD11F |
a
For optimal collimation these packages should be used at the
alignment wavelength. For some applications they may also be used within the AR
coating range. Contact us for custom alignment packages.
b
Collimated Beam Diameter: Theoretical 1/(e2) diameter
@ 1 focal length from lens; fibers: 460HP (-A), SM600 (-B), SMF-28e (-C & -1550)
c
Measured beam full angle of divergence; fibers: 460HP (-A), SM600
(-B), SMF-28e+ (-C & -1550),
S405 (-405)
4. Refocusing & Collimating Fiber/Lens Objectives
at 10.6um
Features
� Compatible with SMA-terminated fiber cables
� NA=0.35, Pupil diameter 14 mm
� Refocusing or collimating design
Applications
� Focusing of collimated beam into fiber
� Collimation of output beam from fiber
� Fiber end imagination to detector / emitter element
Technical parameters
� Z-translation stage adjustable in �5 mm range Lens
parameters
� ZnSe or Ge - on request
� �15 mm; f = 20 mm or 10 mm - on request
� AR - coating for 3-5.5μm or 8-12μm - on request
Drawings
5. Technical References
1) Theoretical
Approximation of the Divergence Angle:
The divergence
angle listed in the specifications table above is the measured beam divergence
angle when using the fiber collimator at its design wavelength with the specific
fiber denoted in the specifications table footnote. This divergence angle is
easy to approximate theoretically using the formula shown below as long as the
light emerging from the fiber has a Gaussian intensity profile. This works well
for single mode fibers, but will underestimate the divergence angle for
multimode fibers where the light emerging from the fiber has a non-Gaussian
intensity profile.
The divergence angle (in Degrees)
θ
≈
(D/f)(180/3.1415927)
where D and f must
be in the same units. θ is Divergence Angle, D is Mode-Field Diameter (MFD)
and f is Focal Length of Collimator
Example Calculation:
When the SF220SMA-A
collimator is used to collimate 515 nm light emerging from a 460HP fiber with a
mode field diameter (D) of 3.5 �m and a focal length (f) of approximately 11.0
mm (not exact since the design wavelength is 543 nm), the divergence angle is
approximately given by
θ ≈ (0.0035 mm /
11.0 mm) x (180 / 3.1416) ≈ 0.018�.
When the beam
divergence angle was measured for the SF220SMA-A collimator a 460HP fiber was
used with 543 nm light. The result was a divergence angle of 0.018�.
3) Collimation Package
Selection Guide:
We offer several
different families of collimation packages, which are summarized in the table
below. Our selection of fixed fiber collimators include packages with aspheric
lenses, which mate with SMA and FC connector. For larger beams, our air-spaced
doublet collimators are ideal.
|
Family |
Brief Description |
|
Fixed FC or SMA Fiber Collimators |
These collimators are designed to couple a free-space
laser beam into an optical fiber. Each collimation package is factory
aligned to provide diffraction-limited performance at one of six
wavelengths: 405, 543, 633, 1064, 1310, or 1550 nm. Although it is
possible to use the collimator at detuned wavelengths, they will only
perform optimally at the design wavelength due to chromatic aberration,
which causes the effective focal length of the spheric lens to have a
wavelength dependence. |
|
Low Divergence Collimators |
For large beam diameters (�6.6 - �8.5 mm), we offer
FC/PC, SMA, and FC/APC air-spaced doublet collimators. These collimation
packages are pre-aligned at the factory to collimate a laser beam
propagating from the tip of an FC or SMA conectorized fiber and provide
diffraction-limited performance at the design wavelength.
|
|
Adjustable Fiber Collimators |
These snap-on collimators are designed to connect onto
the end of an FC/PC or FC/APC connector and contain an AR-coated
aspheric lens. The distance between the aspheric lens and the tip of the
FC-terminated fiber can be adjusted to compensate for focal length
changes or to recollimate the beam at the wavelength and distance of
interest. |
|
Pigtailed Collimators |
Our pigtailed collimators come with one meter of either
single mode or multimode fiber, have the fiber and AR-coated aspheric
lens rigidly potted inside the stainless steel housing, and are
collimated at one of five wavelengths: 532, 1030, 1064, 1310, or 1550
nm. Although it is possible to use the collimator at any wavelength
within the coating range, the coupling loss will increase as the
wavelength is detuned from the design wavelength. |
|
GRIN Fiber Collimators |
We offer four gradient index (GRIN) fiber collimators
that are aligned for either 1310 nm or 1550 nm and have either FC
connectorized or unterminated fibers. Our GRIN collimators feature a
�1.8 mm clear aperture, are AR-coated to ensure low back reflection into
the fiber, and are coupled to standard Corning SMF-28 single mode fibers.
|
|
GRIN Lenses |
These graded-index (GRIN) lenses are AR coated for
applications at 1300 or 1560 nm that require light to propagate through
one fiber, then through a free-space optical system, and finally back
into another fiber. They are also useful for coupling light from laser
diodes into fibers, coupling the output of a fiber into a detector, or
collimating laser light. |
|
Pigtailed Ferrules |
Our pigtailed ferrules have broadband AR coatings
centered at either 1310 nm or 1550 nm and are available with either a 0o
or 8o angled face. These pigtailed ferrules include 1.5
meters of SMF-28e fiber. |
|
FiberPorts |
These new compact, ultra-stable FiberPort
micropositioners provide an easy-to-use, stable platform for coupling
light into and out of FC/PC, FC/APC, or SMA terminated optical fibers.
It can be used with single mode, multimode, or PM fibers and can be
mounted onto a post, stage, platform, or laser. The built-in aspheric
lens is available with three different AR coatings and has five degrees
of alignment freedom (3 translational and 2 rotational). The compact
size and long-term alignment stability make the FiberPort an ideal
solution for fiber coupling, collimation, or incorporation into OEM
systems. |
|
