Fiber Optic Polarizers
1280nm – 1640nm

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

_FEATURES ____ • High extinction ratio ____ • Low loss ____ • Near zero back reflection ____ • Low cost ____ • 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.

OPERATIONAL WAVELENGTH RANGE Phoenix range of polarizers will polarize light of any wavelength from 1280nm to 1625nm in Corning SMF28 fiber. Typically extinction ratio and insertion loss increases with wavelength for the SM/SM devices. The polarizers are specified for a particular wavelength range although they are operational outside the band, performance may differ slightly to the specification. Polarization maintaining polarizers have a flat extinction ratio response across the band offering broadband benefits in certain applications.

_SPECIFICATIONS	SM/SM	SM/PM	PM/PM
Wavelength range 1	1530nm – 1640nm
Maximum extinction ratio 2	>45dB	>40dB	>40dB
Insertion loss 3	<1dB: Typ. 0.5dB	<1dB: Typ 0.8dB	<1.5dB: Typ. 1dB
Wavelength range 1	1450nm – 1530nm
Maximum extinction ratio 2	>45dB	>40dB	>40dB
Insertion loss 3	<0.5dB	<1dB	<1.5dB
Wavelength range 1	1280nm – 1320nm
Maximum extinction ratio 2	>35dB	>35dB	>35dB
Insertion loss 3	<0.5dB	<1dB	<1.5dB
Return loss 4	>70dB
Package size 5___standard	50 x 2 dia	75 x 3 dia	100 x 3 dia
Package size 5___miniature	30 x 2 dia	50 x 3 dia	80 x 3 dia
Operating temperature range 6	-5ºC to 70°C
Transportation/storage 7	-40ºC to 85ºC
Fiber type 8	SMF 28	SMF28/PANDA	PANDA/PANDA
Pigtails 9	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; actual products _• commonly exhibit better performance. _• 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. These are the maximum extinction ratios typically achievable for each of the options. If alternative values are required please discuss with our sales representative. 3. Insertion loss is typically in the region of 0.2dB (SM/SM) to 1dB (PM/PM), excluding connectors.

4. The all-fiber technology gives an excellent return loss figure of >70dB. 5. Dimensions are in mm. Standard – POL, miniature –MPOL. 6. The operating temperature range is specified for typical telecommunications operation. Please discuss with the sales representative if operation outside the specified range is required. 7. The devices are very robust for storage and transportation. 8. 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. 9. 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