Mode-Conditioned Light Sources

Produces Flat Modal Profile at 470 nm or 625 nm
Ø105 µm or Ø200 µm Core Options for Fiber-Coupled Output

MCS101

625 nm, Ø105 µm Core

Connecting a Compatible Patch Cable Does Not Disrupt the Flat-Top Profile of the Mode-Conditioned Source

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Overview
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Features

Flat-Top Profile for Equilibrium Modal Distribution
FC/PC Fiber-Coupled Output
Easily Adjustable Output Power
Includes DS15 Power Supply

Thorlabs' Mode-Conditioned Light Sources are fiber-coupled LED sources that have an output with a flat-top profile in the far field. Common applications include the testing of multimode fused fiber components as well as verification of modal behavior in fiber-based setups. Standard fiber-coupled LED sources can have a range of output profiles that are usually not uniform and vary from source to source. This can be dependent on emitter orientation, alignment with fiber tip, and connector assembly. These mode-conditioned sources have been engineered to distribute light evenly into all transverse modes, resulting in an equilibrium modal distribution at the output. The front panel includes an adjustment knob to control the power and an output port that accepts 2.2 mm wide-key FC/PC connectors. A DS15 15 V power supply with a location-specific plug is included with each device.

See the tables below for 1 m long patch cables verified to work with each item #. Longer patch cables will not affect the overall output distribution, but will reduce the throughput slightly due to fiber attenuation.

Item #	MCS102	MCS104	MCS101	MCS103
LED Wavelength	470 nm	470 nm	625 nm	625 nm
Bandwidth (FWHM)	20 nm	20 nm	15 nm	15 nm
Maximum Intensity at the Exit Port	>0.1 mW	>0.4 mW	>0.1 mW	>0.4 mW
Typical Output Profile (Click to View Graph)	Click Here for Raw Data	Click Here for Raw Data	Click Here for Raw Data	Click Here for Raw Data
95% Intensity Clip Angular Span	±7.35° (Minimum)
95%/50% Intensity Clip Bandwidth Ratio	>0.65
Standard Deviation within 95% Intensity Bandwidth Region	<1.5%
Exit Port Bulkhead	FC/PC, 2.2 mm Wide Key
NA	0.22
Core Diameter	105 µm	200 µm	105 µm	200 µm
Operating Temperature (Non-Condensing)	0 to 40 °C
Storage Temperature	-40 to 70 °C
Risk Group^a	RG2	RG2	RG0	RG0
Compatible Patch Cables^b	M43L01, M18L01	M122L01, M36L01, M91L01	M43L01, M18L01	M122L01, M36L01, M91L01

According to the Standard IEC 62471:2006, Photobiological Safety of Lamps and Lamp Systems
Other patch cables may be used that have identical core size, NA, and connector configurations, but performance may vary.

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470 nm Mode-Conditioned Sources

Item #	LED Wavelength	95% Intensity Clip Angular Span	Typical Output Profile (Click to View Graph)	Maximum Intensity at the Exit Port	Exit Port Bulkhead	NA	Core Diameter	Compatible Patch Cables^a
MCS102	470 nm	±7.35° (Minimum)	Click Here for Raw Data	>0.1 mW	FC/PC, 2.2 mm Wide Key	0.22	105 µm	M43L01 FC/PC to FC/PC M18L01 FC/PC to SMA
MCS104	470 nm	±7.35° (Minimum)	Click Here for Raw Data	>0.4 mW	FC/PC, 2.2 mm Wide Key	0.22	200 µm	M122L01 FC/PC to FC/PC M36L01 FC/PC to SMA (Low OH) M91L01 FC/PC to SMA (High OH)

Other patch cables may be used that have identical core size, NA, and connector configurations, but performance may vary.

625 nm Mode-Conditioned Sources

Item #	LED Wavelength	95% Intensity Clip Angular Span	Typical Output Profile (Click to View Graph)	Maximum Intensity at the Exit Port	Exit Port Bulkhead	NA	Core Diameter	Compatible Patch Cables^a
MCS101	625 nm	±7.35° (Minimum)	Click Here for Raw Data	>0.1 mW	FC/PC, 2.2 mm Wide Key	0.22	105 µm	M43L01 FC/PC to FC/PC M18L01 FC/PC to SMA
MCS103	625 nm	±7.35° (Minimum)	Click Here for Raw Data	>0.4 mW	FC/PC, 2.2 mm Wide Key	0.22	200 µm	M122L01 FC/PC to FC/PC M36L01 FC/PC to SMA (High OH) M91L01 FC/PC to SMA (Low OH)

Other patch cables may be used that have identical core size, NA, and connector configurations, but performance may vary.