High Grade Fiber Optic Polarizers
1280nm – 1625nm

_EXAMPLE APPLICATIONS  ____• PMD measurement ____• PDL measurement ____• Polarization control ____• Single polarization transmitters ____• Polarization sensitive modules ____• Fiber optic gyroscopes ____• Polarimetric sensor systems ____• Test & Measurement instrumentation

_FEATURES ____ • Very High extinction ratio ____ • Low loss ____ • Near zero back reflection ____ • Wide wavelength operating range ____ • Small size ____ • Rugged packaging ____ • All-fiber construction ____

EVANESCENT FIELD POLARIZERS  Phoenix evanescent field polarizers are produced by replacing the cladding in the locally processed region of the fiber with a polarization selective material. Within the polarizing region one polarization mode of the single mode fiber is highly attenuated and the other mode propagates with virtually no loss. Extinction ratios above 50dB are readily achievable whilst maintaining extremely low transmission loss of the required polarization mode.

HIGH GRADE RANGE Phoenix has an extensive selection of polarizers to meet different applications and budgets. The high-grade range shows the full capability of the evanescent field technology providing very high extinction ratio with low excess loss of the required polarization state over a wide band of wavelengths. These are designed specifically for applications in which very pure polarization states are required.

_SPECIFICATIONS	SM/SM	SM/PM	PM/PM
Wavelength range 1	1530nm – 1640nm
Extinction ratio	>55dB	>55dB	>50dB
Insertion loss 2	<0.2dB	<0.4dB	<0.6dB
Wavelength range 1	1450nm – 1530nm
Extinction ratio	>55dB	>55dB	>50dB
Insertion loss 2	<0.2dB	<0.4dB	<0.6dB
Wavelength range1	1280nm – 1320nm
Extinction ratio	>50dB	>50dB	>45dB
Insertion loss 2	<0.2dB	<0.4dB	<0.6dB
Return loss3	>70dB
Package size4___ miniature	30 x 2 dia	50 x 3 dia	80 x 3 dia
Operating temperature range 5	-5ºC to 70°C
Transportation/storage 6	-40ºC to 85ºC
Fiber type 7	SMF 28	SMF28/PANDA	PANDA/PANDA
Pigtails 8	1m fiber standard, 900um loose tube optional
Outer packaging	Stainless steel tube

All dimensions are approximate and may vary slightly.

Notes to Specifications

_• All specifications are worst case for the _• wavelength range selected. _• All polarizers are tested and graded into _• performance groups. _• SM – single mode fiber: PM – polarization _• maintaining fiber. 1. The devices will provide polarization over the full wavelength range for which the fiber is single mode. Performance characteristics are wavelength dependent and the devices will meet specification as follows: _•  Type 15 – 1530nm to 1625nm _•  Type 14 – 1480nm to 1530nm _•  Type 13 – 1280nm to 1320nm 2. Insertion loss is without connectors. 3. The all-fiber technology gives an excellent return loss figure of >70dB.

4. Dimensions are in mm. 5. The operating temperature range is specified for typical telecommunications operation. Please discuss with the sales representative if operation outside the specified range is required. 6. The devices are very robust for storage and transportation. 7. Standard single mode Corning SMF 28 fiber is used for the SM devices and PANDA polarization maintaining fiber for the PM devices. The technology is applicable to any fiber type; please contact the sales representative to discuss any alternative fiber. 8. Pigtails are typically no shorter than 1m.

PRODUCT ORDERING INFORMATION
Note: Not all options below are available in all polarizer types, please check with our
sales representative to ensure your specific requirements can be met.

Download spec sheet as a pdf file

U6 Vulcan House, Restmor Way, Wallington, Surrey SM6 7AH UK
T: +44 (0)20 8405 4339 F: +44 (0)20 8763 9820
E: sales@phoenixphotonics.com