1550nm Polarization Maintaining 3 Ports Optical Circulator
P/N: FIR-1550-PM-3P-OC|SKU: 10191
Unit Price
MOQ: 1 pcs
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Below is a general estimate for most orders. For exact delivery time, please contact [email protected].
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1550nm Polarization Maintaining 3 Ports Optical Circulator
The 1550nm Polarization Maintaining 3-Port Optical Circulator is a high-performance non-reciprocal optical device designed to route optical signals sequentially from Port 1 → Port 2 → Port 3 with excellent isolation and minimal loss. Built with PM1550 polarization maintaining fiber, it preserves the input polarization state while ensuring stable and repeatable system performance.
Featuring a dual-stage design at 1550nm, this circulator delivers high isolation (≥40 dB) and low insertion loss (≤0.9 dB), making it ideal for demanding applications such as fiber lasers, coherent communication systems, and precision optical sensing where polarization stability is critical.
Specifications
Parameter | Unit | Value |
|---|---|---|
Center Wavelength | nm | 1550 |
Operating Wavelength Range | nm | ±30 |
Single/Dual Stage | - | Dual Stage |
Peak Isolation (Typ.) | dB | 52 |
Isolation (Min.) | dB | 40 |
Insertion Loss (Max.) | dB | 0.9 |
Return Loss (Min.) | dB | 50 |
Extinction Ratio (Min.) | dB | 20 |
Max Optical Power (CW) | W | 0.5/1/5 |
Max Peak Power (Pulse) | KW | <10@ns pulse |
Crosstalk (Min.) | dB | 50 |
Fiber Type | - | PM1550 |
Working Axis | - | Slow Axis (Default) or Fast Axis or Both Axis |
Package Dimensions | mm | Φ5.5 x L35 |
Operating Temperature | °C | -5 to +70 |
Storage Temperature | °C | -40 to +85 |
Notes: Tested at 25 °C. Data exclude connectors. Adding connectors will increase insertion loss by approximately 0.3 dB, reduce return loss by 5 dB, and decrease extinction ratio by 2 dB. The fiber slow axis is aligned to the key by default. For Fast Axis or Both Axis options, please contact [email protected] for pricing.
Dimensions
FAQ
- Q: What is the difference between polarization maintaining and standard optical circulators?
- A: Polarization maintaining (PM) optical circulators preserve the input polarization state throughout transmission, while standard circulators do not control or maintain polarization. PM circulators are essential in polarization-sensitive applications such as fiber lasers, interferometers, and coherent communication systems.
- Q: Which fiber type is used in this 1550nm PM circulator?
- A: This device uses PM1550 polarization maintaining fiber, optimized for operation in the 1550 nm wavelength range to ensure stable polarization performance and low loss.
Questions & Answers
How should the polarization axis be aligned during use?
By default, the slow axis of the PM fiber is aligned to the connector key. For optimal performance, the input polarization must be aligned with the slow axis. Custom alignment (fast axis or both axes) is available upon request.
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