Polarizers 1060nm and 980nm

Fiber Polarizers
1060nm and 980nm Operation

_FEATURES

____• High extinction ratio

____• Low loss

____• Near zero back reflection

____• Low cost

____• Wide wavelength operating range

____• Small size

____• Rugged packaging

____• All-fiber construction

_EXAMPLE APPLICATIONS:
____• Polarization state definition	____• Polarization sensitive modules
____• Polarization analysis	____• Fiber sensors
____• Polarization control	____• Test & Measurement instrumentation

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. High extinction ratios are readily achievable whilst maintaining extremely low transmission loss of the required polarization mode.

OPERATIONAL WAVELENGTH RANGE
Phoenix 980nm and 1060nm polarizers will polarize light of any operational wavelength of the fiber, a single polarizer can be used to cover both wavelengths if required. 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		980nm – 1080nm
Maximum extinction ratio²		40dB	35dB	35dB
Insertion loss³		<1dB: Typ. 0.5dB	<1dB: Typ 0.8dB	<1.5dB: Typ. 1dB
Return Loss⁴		>70dB
Package size⁵	standard_	50 x 2 dia	75 x 3 dia	100 x 3 dia
	miniature_	30 x 2 dia.	50 x 3 dia.	80 x 3 dia
Operating temperature range⁶		-5⁰C to 70⁰C
Transportation/storage⁷		-40⁰C to 85⁰C
Pigtails⁸		1m fiber standard, 900nm 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 depolarizers are individually tested.
_• 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.
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.	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.

T: +44 (0)20 8405 4339 F: +44 (0)20 8763 9820
E: sales@phoenixphotonics.com