TGG Based 635nm Optical Isolator
The Optical Isolator is characterized with low insertion loss, high isolation, high return loss, excellent environmental stability and reliability. It has been widely used in lasers, transmitters and other fiber optics communication equipment to suppress back reflection and back scattering.
DK Photonics offers a large selection of polarization insensitive or polarization maintaining fiber-in to fiber-out isolators. These devices can handle powers rang from 300mW to 150W or other on request, and have center operating wavelengths ranging from 400nm to 1650nm.
If you do not see a standard isolator that meets your needs, we welcome the opportunity to review your desired specification and quote a custom isolator. Requests for custom fiber pigtails, different wavelengths and handling power of operation or other specific needs will be readily addressed.
| Features | Applications |
| · High isolation
· Low insertion loss · Cost Effective · Excellent environmental stability and reliability |
· Fiber Optic Amplifiers
· Fiber Optic Laser · Test and Measurement · Instrumentation |
Performance Specifications
| Parameters | Unit | Values |
| Central Wavelength | nm | 635, or 680 |
| Operating Wavelength Range | nm | ±5 |
| Typ. Peak Isolation | dB | 30 |
| Min. Isolation in Band (at 25℃) | dB | 25 |
| Typ. Insertion Loss | dB | 1.6 |
| Max. Insertion Loss (at 25℃) | dB | 2.0 |
| Max. PDL(for SM fiber) | dB | 0.15 |
| Min. Extinction Ratio(for PM fiber) | dB | 18(Type B), 20(Type F) |
| Min. Return Loss | dB | 55/50 |
| Maximum Power Handling (continuous wave) | mW | 100 |
| Max. Tensile Load | N | 5 |
| Fiber Type | – | SM: Nufern 630-HP or other
PM: Nufern PM630-HP or other |
| Operating Temperature | °C | 0 ~ + 70 |
| Storage Temperature | °C | -40 ~ +85 |
- Above specification are for device without connector, and may change without notice.
- IL is 1.0 dB higher and RL is 5 dB lower, ER is 2dB lower(PM type) for each connector added.
- Type B: Both axis working, Type F: Fast axis blocked, the default is Type B if without request.(Only for PM type)
Package Dimension
*Due to ongoing design improvements, the package size is subject to change. Please contact DK Photonics for confirmation.
Order information
P/N: ISO(PMISO)-①-②-③-④-⑤ (PMISO-B/F: Polarization Maintaining Optical Isolator)
When you inquire, please provide the correct P/N number according to our ordering information, and attach the appropriate description would be better. If need any connector, we do not recommend choosing a 250μm bare fiber pigtail. For high power applications, we recommend direct splicing without connectors.
| ① | ② | ③ | ④ | ⑤ |
| wavelength | Fiber Type | Pigtails Diameter | Fiber Length | Connector Type |
| 532:532nm
635:635nm 680:680nm XX: Other |
XX/XX/XX/XX:
(core/clad/core NA/clad NA) |
25:250μm bare fiber
90:900μm Loose Fiber XX: Others |
10:1.0m
XX: Other |
00:None
FP: FC/PC FA: FC/APC SP: SC/PC XX: Others |
Part Number Example #1: ISO-635 -630HP-90-10-FA
Description: TGG Based 635nm Optical Isolator, Nufern 630-HP fiber, with 0.9mm OD loose tube, 1.0m length fiber pigtails, and FC/APC connectors at all ports.
Part Number Example #2: PMISO-F-635-PM630HP-90-10-FA
Description: TGG Based 635nm Optical Isolator, fast axis blocked, Nufern PM630-HP fiber, with 0.9mm OD loose tube, 1.0m length fiber pigtails, FC/APC connectors at all ports.
Ordering Information For Custom Parts
If you need to customize other specifications, please provide detailed description for your requirement.
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