PM BOW TIE FIBER COUPLER
Fused Fiber Coupler
The Gooch & Housego PM bow tie coupler enables the accurate monitoring and splitting of optical signals in polarization maintaining fiber.
Manufactured using PM bow tie fiber, the PM coupler is available in any coupling ratio from 1 – 50%.
Based on G&H’s fused fiber technology, the PM bow tie coupler demonstrates very low loss, high power handling and there is no price penalty for adding a second input port. The center operating wavelength may be chosen from within the 1 µm operating pass-band, other operating pass-bands are available dependent on fiber availability.
In common with all PM components, it is necessary to launch into either the slow or the fast axis to maintain polarization. For the G&H PM bow tie coupler, specifications are based on slow axis launch, although fast axis versions are also available if requested.
NOTE: Other component types including ultra-low ratio taps (ULRT) and wavelength division multiplexers (WDM) are available on request.
Key Features
• All PM bow tie fiber construction
• Low excess loss
• High power handling
• 1 µm passband as standard
• Slow axis operation as standard
• Fast axis operation also available
Applications
• Power monitoring of PM sources
• Coherent communications
• Fiber gyroscopes
• High power fiber lasers
• Fiber amplifiers
Target Optical Specifications 1
Parameter
Specification
Centre wavelength range
9xx nm
10xx nm
11xx nm
Available wavelengths2
900-999 nm
1000-1099 nm
1100-1199 nm
Coupling ratio
1/99%
Coupling ratio tolerance
+/- 0.5%
Extinction ratio3
20 dB
20 dB
20 dB
Coupling ratio
5/95%
Coupling ratio tolerance
+/- 1.5%
Extinction ratio3
20 dB
20 dB
20 dB
Coupling ratio
10/90%
Coupling ratio tolerance
+/- 3.0%
Extinction ratio3
20 dB
20 dB
20 dB
Coupling ratio
33/67%
Coupling ratio tolerance
+/- 4.0%
Extinction ratio3
17 dB
17 dB
17 dB
Coupling ratio
50/50%
Coupling ratio tolerance
+/- 5.0%
Extinction ratio4
17 dB
17 dB
17 dB
Excess loss
0.3 dB
0.3 dB
0.3 dB
Return loss/directivity
50 dB
Optical power handling5,6
4 W
Pigtail tensile load
5 N
Operating temperature
-5 – +75°C1
Storage temperature
-40 – +85°C
Fiber type
Fibercore Bow Tie HB1000C – 6 and 10 µm core
1 All specifications are for operation at room temperature.
2 The center wavelength may be selected from within the available wavelength ranges supplied.
3 Defined for signal path P1-P2.
4 Defined for both signal path P1-P2 and tap path P1-P3.
5 For operation at powers of greater than 4 W the component housing and fiber must be adequately heat-sunk (for additional information contact G&H Sales). Components intended for high power operation are only available in the 2x2 configuration. Component performance and reliability under high power must be determined within the customer system.
6 The performance and reliability of optical connectors is not guaranteed for optical powers of greater than 1 W.
7 For connectorized component, operating temperature range is –5 – +75oC.
Optical Performance Example
Housing Options
Housing Code
Description
1x2, 2x2 Dimensions (mm)
Pigtail
3
Regular
3.0
(Ø) x 60 (L)
Primary-coated fiber
5
Semi-ruggedized slim
3.0
(Ø) x 76 (L)
Ø 0.9 mm loose-tube
7
High power housing
5 (W) x 5 (H) x 85 max (L)
Primary-coated fiber
C
Regular high power
3.0
(Ø) x 60 (L)
Primary-coated fiber
Configuration
Order code
Order codes are comprised of a standard device prefix (e.g. FPB) followed by code letters or numbers which correspond to available options.
Sample: FPB-8K3264A10 (Fused fiber PM coupler, center channel wavelength 1064 nm, 50/50 coupling ratio, regular housing, 2x2 nm, HB1000C 6 µm fiber, 1 m pigtail lengths, no connector).
1 Channel center must be within the wavelength ranges shown in the optical specifications table.
2 Minimum pigtail length. Other pigtail lengths are available on request. Where connectorized, pigtail length is to connector end face.
3 Optical specifications in specification table do not include connector loss.
4 Other coupling ratios available on request.
5 7 & C not available in 1x2 Configuration
6 Connectors can only be fitted to housing type 5. For connectorization of other housings contact G&H sales.
PM Products are manufactured using 250µm PM Bow Tie fiber.
商品属性 [波长] 900-1200nm