Frequently Asked Questions

The product supports a range of wavelengths which include: 532nm, 635nm, 650nm, 780nm, 850nm, 980nm, 1030nm, and 1060nm. These values represent the operational wavelength range that the circulator can handle.

The product is designed to transmit in the direction from port 1 to port 2, and from port 2 to port 3. This indicates the sequence of ports in which the light circulates.

The product provides a typical isolation of 23 dB for the wavelengths 532nm, 635nm, and 650nm, and 25 dB for 780nm and 850nm, and 27 dB for 980nm, 1030nm, and 1060nm. The minimum isolation is 20 dB for the wavelengths 532nm, 635nm, and 650nm, and 21 dB for 780nm and 850nm, and 22 dB for 980nm, 1030nm, and 1060nm. Isolation refers to the ability of the device to prevent light from returning to the source.

The maximum insertion loss (for the Fast Axis Block) for 532nm is 2.3 dB, for 635nm and 650nm it's 2.0 dB, and for 780nm, 850nm, 980nm, 1030nm, and 1060nm, it's 1.5 dB. Insertion loss is the reduction of signal power resulting from the insertion of a device in a transmission line.

The minimum extinction ratio for all the mentioned wavelengths is 18 dB for the wavelengths 532nm, 635nm, and 650nm, and 20 dB for 780nm, 850nm, 980nm, 1030nm, and 1060nm. The extinction ratio is the ratio of the power of the transmitted light in the principal polarization state to the power of the transmitted light in the orthogonal state.

The minimum return loss for all the wavelengths is 45 dB. Return loss is a measure of how much of the light is reflected back towards the source.

The minimum directivity for all the wavelengths is 40 dB. Directivity is a measure of the ability of the device to concentrate power flow in a particular direction.

The maximum optical power handling for 532nm is 50 mW, for 635nm and 650nm it's 100 mW, for 780nm and 850nm it's 150 mW, and for 980nm, 1030nm, and 1060nm it's 250 mW. This represents the amount of optical power that the circulator can handle safely.

The product specifications provided are for parts without connectors. Adding connectors can affect the Insertion Loss (IL), Return Loss (RL), and Extinction Ratio (ER). The connector key is aligned to the slow axis.

Contact Ascentta with your custom configuration needs. The ordering information includes the port (PMVCIR3=3-Port), wavelength (e.g., 532=532nm), fiber type (e.g., PM=Polarization-Maintaining), cable type, fiber length, connector, maximum power, and package. Other configurations can be specified.

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