Features

Fixed or Adjustable Coupling Available for a Variety of Applications
Thermally and Mechanically Stable
Easily Compatible with Thorlabs' Complete Line of FiberBench Components
Beam Height is 14.3 mm Measured from the Deck
303 Non-Magnetic Stainless Steel

Thorlabs' adjustable and fixed fiber-to-fiber U-Benches consist of the FiberBench base combined with either two patch cables or two FiberPorts. The Adjustable U-Benches feature a FiberPort on either end that incorporates an AR-coated aspheric lens for one of three wavelength ranges: 400 - 600 nm (-A coating), 600 - 1050 nm (-B coating), and 1050 - 1600 nm (-C coating). The Fixed U-Benches feature two input and output FC/PC or FC/APC patch cables with a narrowband antireflection coating to minimize insertion and return losses. Please see the Specs Tab for more details.

The U-Benches allow for easy access to the optical beam and are ideal for fiber-to-fiber applications that incorporate multiple components and require the utmost in stability. While inserting thick optical components into the beam path, lateral offset can occur leading to additional insertion loss. The X-Y Tweaker Module can be used to compensate for up to 500 μm of beam displacement.

The U-Benches can be used in a variety of applications that consist of one-input one-output systems. One such application is the Polarization Controller which utilizes the adjustable U-Bench along with compatible three wave plates. Please see the Application Tab for more details.

FiberBench Accesories
FiberPorts	Optic Mounts	Alignment Tools	Polarizers
Beamsplitter Modules	Mirror Modules	Rotating Wave Plates	FiberBenches

Adjustable U-Benches

Item #	Bulkhead Type	EFL	Input MFD^a	Output Waist Dia.	Max Waist Dist.^b	Divergence	Lens Characteristics
Item #	Bulkhead Type	EFL	Input MFD^a	Output Waist Dia.	Max Waist Dist.^b	Divergence	CA^c	NA	AR λ ^d
FBP-A-FC	FC/PC or APC	2.0 mm	3.5 µm	0.33 mm	96 mm	1.75 mrad	2.0 mm	0.50	400 - 600 nm
FBP-A-SMA	SMA	2.0 mm	3.5 µm	0.33 mm	96 mm	1.75 mrad	2.0 mm	0.50	400 - 600 nm
FBP-B-FC	FC/PC or APC	2.0 mm	4.3 µm	0.43 mm	89 mm	2.20 mrad	2.0 mm	0.50	600 - 1050 nm
FBP-B-SMA	SMA	2.0 mm	4.3 µm	0.43 mm	89 mm	2.20 mrad	2.0 mm	0.50	600 - 1050 nm
FBP-C-FC	FC/PC or APC	2.0 mm	10.4 µm	0.38 mm	38 mm	5.20 mrad	2.0 mm	0.50	1050 - 1600 nm
FBP-C-SMA	SMA	2.0 mm	10.4 µm	0.38 mm	38 mm	5.20 mrad	2.0 mm	0.50	1050 - 1600 nm

^aMode Field Diameter
^bMaximum distance that the beam waist can be from the lens while still remaining collimated

^cClear Aperture
^dWavelength Range of the Antireflection Coating

Fixed U-Benches

Item #	Connectors	Wavelength	Bandwidth	Fiber Type	Beam Diameter (Typical)	Insertion Loss
FBC-780-FC	FC/PC	780 nm	±15 nm	780 HP	0.5 mm	0.85 ± 0.3 dB
FBC-780-APC	FC/APC	780 nm	±15 nm	780 HP	0.5 mm
FBC-1060-FC	FC/PC	1064 nm	±15 nm	1060XP	2.0 mm
FBC-1060-APC	FC/APC	1064 nm	±15 nm	1060XP	2.0 mm
FBC-1310-FC	FC/PC	1310 nm	±15 nm	SMF-28e	2.8 mm	0.6 ± 0.3 dB
FBC-1310-APC	FC/APC	1310 nm	±15 nm		2.8 mm
FBC-1550-FC	FC/PC	1550 nm	±15 nm		3.1 mm
FBC-1550-APC	FC/APC	1550 nm	±15 nm		3.1 mm

AR-Coating Wavelength Range

Polarization Controller

Click to Enlarge

We currently offer a Polarization Controller Kit consisting of the Adjustable U-Bench, two quarter-wave plates, and one half-wave plate. The U-Bench controller has the same function as a paddle controller, while offering a more deterministic and stable polarization manipulation. Since it does not have any hysteresis, it is possible to predict the controller's output State of Polarization (SOP) at any instant in time given only its input SOP. Hysteresis describes the lag that exists between the responding parameter and the changing parameter or, in this case, the time lag between the SOP change and the moving of the fiber paddles.

In any system with hysteresis, like a fiber paddle controller, there is no way to predict the output. When a paddle controller is adjusted, the SOP takes time to stabilize and may not stabilize at the intended value. Furthermore, without a polarimeter, the SOP from the paddle controller cannot be determined directly. With the U-Bench Polarization Controller, any input polarization state can be deterministcally rotated into a known output polarization state using a quarter-wave, half-wave, and another quarter-wave plate mounted (in this order) between the two FiberPorts of the Adjustable U-Bench. Each plate can be precisely and continuously rotated through 360°.

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Posted Comments:

Poster: yanglifeng

Posted Date: 2013-03-22 23:24:10.76

hi sir/madam: I want to connect the singlemode fiber with mutimode fiber(the type with 8/125 and 50/125 ),please provide the suitable type for me .thankyou very much.

Poster: jlow

Posted Date: 2013-03-27 11:35:00.0

Response from Jeremy at Thorlabs: We will contact you directly to start a discussion on the requirements for your application.

Poster: jlow

Posted Date: 2012-12-24 10:15:00.0

Response from Jeremy at Thorlabs: The FBC-1550-APC is pre-aligned for 1550nm and the typical insertion loss is <0.6dB. There's no adjustment possible with this. I will e-mail you directly to troubleshoot this.

Poster: qch_sun

Posted Date: 2012-12-19 07:18:48.32

I have used the product FBC-1550-APC,but the insertion loss is more than 1dB, nearly 3dB. Is there any alignment I can do the reduce the loss?

Poster: jlow

Posted Date: 2012-07-31 17:53:00.0

A response from Jeremy at Thorlabs: Thank you for your inquiry. Yes we would be able to custom align the FBP-A-FC. This would only be a rough alignment and not locked in place. We will get in contact with you directly with regard to a quote.

Poster: delosrey

Posted Date: 2012-07-26 19:15:52.0

I am interested in this product and this is very useful to my experiment. I just want to ask if it is possible for this U-bench to be pre-aligned at 405nm instead of 633 nm as it was mentioned in this website?

Poster: bdada

Posted Date: 2011-10-10 17:17:00.0

Response from Buki at Thorlabs: We will contact you to discuss your application. We do not have a single mode fiber designed for 1200 - 2400nm. SM2000 is from 1700-2100 and SMF28 is from 1260-1620nm. In terms of the optics we can use a D coated lens, which will help with the transmission of the higher wavelengths and should still transmit well over the lower wavelengths, but have increased reflections.

Poster: assv

Posted Date: 2011-10-06 04:19:23.0

Hi, we need a pigtailed fiber bench for use between 1200 and 2400 nm with a super continuum light source and an OSA covering this range. Can you provide additional specifications for the transmission in this wavelength range?

Poster: Thorlabs

Posted Date: 2010-08-28 03:28:37.0

Response from Javier at Thorlabs to ziqiangliu: We may be able to quote this pigtailed fiber-fiber coupler for you. I will contact you directly with more details.

Poster: ziqiangliu

Posted Date: 2010-08-27 22:43:43.0

I need a 1064nm pigtail fiber bench. And I hope the connector will be APC. Could you give me a quotation for the customerized product? Best regards, Jeffery Liu China-fiber Optics Co., Ltd. Email: jeffery@china-fiber.net, Ziqiangliu@gmail.com Cellphone:+86-13632907211

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Fixed U-Benches

Polarization Controller