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Connector
FC/APC
Structure
Male-Female
Visible Samples
0 / 1 / 2 / 4 dB
Use
Power Control
|
product photo: threaded FC body, green APC visual coding, and dB label. |
Supplied dB sample image: FC/APC 1 dB variant. |
Stable fixed attenuation for FC/APC single-mode links
This FC/APC fixed fiber optic attenuator is used when an optical signal needs to be reduced before it reaches the receiver, test instrument, distribution point, or active equipment interface.
The threaded FC housing gives the product a secure mechanical connection, while the green APC coding helps technicians match the attenuator with FC/APC connector systems. The printed dB label also makes the attenuation value easier to identify during installation or replacement.
For procurement, this page should be treated as an FC/APC-specific attenuator page. The buyer should confirm the required dB value, wavelength, test-report requirement, packaging, and order quantity before quotation.
Why FC/APC is different
FC connectors are commonly associated with a threaded coupling mechanism, which is useful where a more secure physical connection is required.
APC is not simply a green color code. It indicates an angled-polish connector style that is used when back reflection needs to be controlled more carefully than with standard flat physical-contact styles.
This is why the FC/APC page should not share the same opening copy as the FC/UPC version. The FC/APC buyer is usually checking both the mechanical interface and the polish-matching requirement.
Designed for practical link-level optical power control
Threaded FC connection
The round FC-style metal body and threaded coupling help support secure mating in FC/APC patching or equipment interfaces.
APC matching
Green APC coding makes it easier to distinguish this attenuator from UPC options and helps reduce mismatched connector selection.
Clear dB identification
The body label helps engineers and warehouse teams identify attenuation values during testing, installation, and batch picking.
Compact inline format
The male-female inline structure allows attenuation to be added directly at a connection point without redesigning the link layout.
Confirmed details and safe technical context
The table separates what is visible in the supplied FOCC files from broader industry reference values. Exact FOCC performance values should be confirmed from the final datasheet before publication.
| Item | Page Value | Evidence Level |
|---|---|---|
| Product type | Male-female fixed fiber optic attenuator | Confirmed by local product folder and images |
| Connector type | FC | Confirmed by folder name and product appearance |
| Polish type | APC | Confirmed by folder name and green APC coding |
| Fiber type | Single-mode positioning | Supported by local datasheet filename including SM |
| Visible attenuation samples | 0 dB, 1 dB, 2 dB, 4 dB in supplied images / filenames | Confirmed by local files |
| Common industry attenuation range | 1-30 dB appears in manufacturer attenuator references | Use as industry context, not final FOCC SKU claim |
| Operating wavelength | Common references include 1310 nm / 1550 nm and wider single-mode windows | Confirm final FOCC value from datasheet |
| Return loss / reflectance | APC is generally used for lower back reflection than UPC | Use conceptually; confirm exact dB value before publishing |
Where FC/APC fixed attenuators are typically specified
Telecom and FTTH links
Used where single-mode optical power needs to be adjusted while keeping FC/APC connector matching consistent.
Receiver protection
Helps reduce incoming optical power before it reaches sensitive receivers or measurement devices.
Lab and field testing
Can be used during optical link verification, signal margin checks, and controlled attenuation tests.
Batch replacement stock
Suitable for distributors and integrators who need repeatable FC/APC attenuation values for maintenance or project supply.
What buyers should confirm before ordering
For an FC/APC attenuator, the most important ordering details are not just price and quantity. The buyer should confirm the exact attenuation value, connector polish, wavelength, test requirement, and packaging format.
- Required attenuation value, such as 1 dB, 2 dB, 4 dB, or another confirmed option
- FC/APC connector matching requirement
- Single-mode fiber requirement and operating wavelength
- Need for test report, product label, or custom marking
- Sample quantity, bulk order quantity, and packing requirement
Common questions for FC/APC attenuator sourcing
Can FC/APC be used with FC/UPC?
The page should guide buyers to match APC with APC and UPC with UPC. Mixing polish types can create poor physical contact and higher reflection risk, so connector polish should be confirmed before ordering.
Which dB value should I choose?
Choose the attenuation value based on the optical power budget of the link. If the buyer is unsure, ask for transmitter output power, receiver input range, wavelength, and link length before recommending a value.
Is this a single-mode attenuator?
The local datasheet filename includes SM, and FC/APC attenuators are commonly used in single-mode systems. The final page should still confirm fiber type from the official FOCC datasheet before publishing fixed specifications.
Can FOCC provide labels or test data?
The product series includes visible dB labels in the supplied photos. Test report, wavelength-specific measurements, and custom labeling should be confirmed in the RFQ stage.
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