1550nm Polarization Maintaining Optical Isolator
P/N: FIR-1550-PM-OI|SKU: 10247
Unit Price
MOQ: 1 pcs
Production time varies based on product type, quantity, and customization level.
Below is a general estimate for most orders. For exact delivery time, please contact [email protected].
Shipping: FedEx / DHL / UPS Express · Tracking number provided after shipment
1550nm Polarization Maintaining Optical Isolator
The 1550nm Polarization Maintaining Optical Isolator is a high-performance passive device designed to ensure unidirectional light transmission while preserving the input polarization state. Built with PM1550 polarization maintaining (PM) fiber and optimized for the C-band, this isolator effectively suppresses back reflections and feedback, protecting sensitive optical components such as lasers and amplifiers.
Utilizing magneto-optic technology, the device maintains stable polarization alignment (slow axis by default) and delivers high isolation with low insertion loss. Available in both single-stage and dual-stage configurations, it offers flexible performance options for applications requiring enhanced isolation or power handling.
This PM optical isolator is ideal for precision optical systems where polarization stability and signal integrity are critical.
Specifications
Parameter | Unit | Value | |
|---|---|---|---|
Center Wavelength | nm | 1550 | |
Operating Wavelength Range | nm | ±20 | ±20 |
Single/Dual Stage | - | Single Stage | Dual Stage |
Peak Isolation (Typ.) | dB | 40 | 55 |
Isolation (Min.) | dB | 26 | 45 |
Insertion Loss (Max.) | dB | 0.6 | 0.8 |
Return Loss (Min.) | dB | 50 | |
Extinction Ratio (Min.) | - | 20 | 22 |
Max Optical Power (CW) | W | 0.5/1/2/5 | |
Max Peak Power (Pulse) | KW | <1@ns pulse | |
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 single-stage and dual-stage isolators?
- A: Single-stage isolators typically provide standard isolation levels (around 35–40 dB), while dual-stage isolators offer significantly higher isolation (up to 55 dB).
- Q: What is the difference between this PM isolator and a polarization insensitive isolator?
- A: A polarization maintaining (PM) isolator preserves the input polarization state, making it ideal for polarization-sensitive applications such as fiber lasers and interferometric systems. In contrast, a polarization insensitive (PI) isolator operates with random polarization and is typically used in general optical communication systems where polarization control is not required.
Questions & Answers
How do I align the polarization axis during use?
The 1550nm polarization maintaining (PM) isolator is typically designed to allow light aligned with the slow axis to pass, while attenuating light in the fast axis or orthogonal polarization states. During fiber splicing, it is essential to precisely align the input polarization (e.g., the stress axis of a PANDA fiber) with the isolator’s slow axis to achieve minimum insertion loss and maximum extinction ratio.
Customer Reviews
No reviews yet. Be the first to review this product.