Step-Index Multimode Fiber Optic Patch Cables: SMA-SMA
*Click on the wavelength range to view the attenuation plot.
- Numerical Apertures from 0.1 to 0.48
- Cables Available for Wavelengths from 280 nm to 2400 nm
- SMA 905 Connectors on Both Ends
- Ø3 mm or Ø3.8 mm Outer Jacket
- Custom Cables Available (See Custom Cables Tab)
- LED Energy Transmission
- Medical Instruments
Thorlabs offers multimode step index fiber optic patch cables with SMA 905 (straight ferrule) connectors on both ends. These cables are ideal for a broad range of wavelengths from 280 nm to 2400 nm. With Numerical Apertures up to 0.48, these are excellent for coupling using our SMA reflective couplers.
Each patch cable includes two protective caps that shield the connector ends from dust and other hazards. Additional CAPN Fiber Caps for SMA-terminated ends are also sold separately. All patch cables on this page are sold from stock with same-day shipping available.
We have extensive patch cable capabilities including a large, diverse stock of bare fiber and many different types of fiber connectors. If you do not see an SMA to SMA step-index multimode cable suitable for your application, please click the Custom Cables tab above for a quote on your desired fiber patch cable.
Numerical Aperture (NA), a measure of the acceptance angle of a fiber, is a dimensionless quantity. For applications, it is most commonly expressed as
is the maximum 1/2 acceptance angle of the fiber,
is the index of refraction of the material outside of the fiber; this material is typically air, making it equal to approximately 1.0, as shown in the figure below.
Figure: A ray at the maximum 1/2 acceptance angle propagates into a fiber.
Numerical Aperture can also be defined in terms of the index of refraction of the fiber core and the cladding. Due to Snell’s law, there is a critical angle above which all of the light at a fiber-cladding interface will be totally internally reflected. In turn, this means that there is a maximum acceptance angle at which light can enter the fiber. Following Snell’s law, the maximum acceptance angle can be determined:
is the index of refraction of the fiber core,
is the index of refraction of the cladding,
is the critical angle for total internal reflection,
is the maximum 1/2 acceptance angle.
This is the common way numerical aperture is defined for optical fibers. It is also important to note that these equations assume that a Gaussian beam is being outputted from the fiber.
Custom Patch Cables Service with Same Day Shipment
Thorlabs stocks the largest selection of single mode and multimode optical fibers in the photonics industry. Simply use the form below to receive a quote.
Custom patch cables can be shipped the same day provided the following criteria* are met:
- Order Does Not Exceed 5 Cables
- Each Cable Does Not Exceed a Length of 20 m
- The Tolerance is ±1% or ±7 cm, Whichever is Greater**
- The Order is Placed Before 2:00 PM (Eastern Standard Time)
*Other restrictions may apply. Not available with POF fibers, PM fibers, high-power cables, or fiber bundles.
**Tighter tolerances may be available by contacting Technical Support and may not be available for same day shipping.
Please Note: Cables are manufactured in the US. Please allow for longer international shipment times.
|Please use the Custom Cable web form below to request a quotation for custom patch cables.|