# 81657A Agilent Fiber Optic Equipment Used

**Additional Features:**

-   1310 and 1550nm
-   20mW output power
-   CW power stability: ±0.03db (24h)
-   Output attenuation

The Agilent 81657A Fabry-Perot laser sources is a dual-wavelength modules to be used in conjunction with optical power meter modules for insertion loss, optical return loss and PDL measurement of broadband components and fiber. The Agilent 81657A Fabry-Perot lasers are insensitive to back reflections and are stabilized for short and long-term applications. For convenience there are single and dual wavelength source modules, available with an output power of up to +13dBm. The output power of the sources can be attenuated for applications where lower power is needed.

## Details

- **Price:** 0.0 USD
- **Vendor:** Agilent
- **Type:** Fib Optic
- **Tags:** Agilent, Agilent Keysight, Fiber Optic, Manufacturers, Other Equipment, product_manual_group_1, Product_used

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 0.00 USD | In stock |

## Images

- 81657A Agilent Fiber Optic Equipment Used

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> Source: [ValueTronics](https://valuetronics.com/products/81657a-agilent-fiber-optic-equipment-used)
> Updated: 2026-05-21