Telecoms PM Fiber
TelecomsPolarization Maintaining (PM) fibers (HB-T) are mode-matched to standard‘telecoms’ fibers. The result of this is that splice losses of less than 0.1dBcan be achieved routinely, with Polarization Extinction Ratios (PERs) of betterthan -32dB. Similarly, HB-T’s geometric precision makes it ideally suited for45° splices across PM axes for Lyot depolarizers. All Fibercore PM fibers aredesigned and tested to exceed all relevant Telcordia™ standards.
HB1250T, HB1480T and HB1500T are also available with a 400μm dual acrylatebuffer for enhanced ruggedness and reduced PER degradation during packaging.
HB980T and HB1480T have been designed specifically for the polarizationmultiplexing and pigtailing of pump diodes.
HB14XXT is a unique short beat-length fiber suitable for Raman pumpdepolarizers and applications that require the shortest beat-length with atelecoms friendly core.
Fibercore’s ‘Bow-Tie’ design is capable of creating more birefringence than anyother stressed design. This is simply because it is based on two opposingwedges, the most simple and efficient means of applying stress to a point.
Typical applications:
• Telecoms
• Erbium Doped Fiber Amplifier (EDFA)
• Cable Television (CATV)
• Interferometric sensors
Advantages:
• Highly Birefringent (HB)
• Short Beat-Lengths (SB)
• Strong PER maintaining
Related Products:
•PM Erbium Doped Fiber (DHB1500)
• Zing™ Polarizing Fiber (HB-Z)
• Standard PM Fiber (HB)
• PM Coupler Fiber (HB-C)
• PM Gyro Fiber (HB-G)
• Polyimide Coated PM Fiber (HB-P)
ProductVariants:
• HB980T PM pump fiber for use in telecoms style 980nm pumps
• HB1250T(245) PM transmission fiber for use around 1310nm
• HB1250T(400) Thick coating PM transmission fiber for use around 1310nm forimproved micro-bend resistance
• HB14XXT Short beat-length 14XXnm fiber for Raman depolarizers
• HB1480T(245) PM transmission fiber for 1480nm
• HB1480T(400) Thick coating PM transmission fiber for use around 1480nm forimproved micro-bend resistance
• HB1500T(245) PM transmission and depolarizer fiber for use around 1550nm
• HB1500T(400) Thick coating PM transmission fiber for use around 1550nm forimproved micro-bend resistance
| HB980T | HB1250T (245) | HB1250T (400) | HB14XXT | HB1480T (245) | HB1480T (400) | HB1500T (245) | HB1500T (400) |
Operating Wavelength (nm) | 980 - 1310 | 1300 - 1480 | 1480 - 1550 | 1550 - 1650 |
Cut-Off Wavelength (nm) | 870 - 970 | 1100 - 1290 | 1290 - 1450 | 1290 - 1540 |
Numerical Aperture | 0.13 – 0.15 | 0.11 – 0.13 |
Mode Field Diameter (μm) | 5.3 – 6.4 @980nm | 8.1 – 9.9 @1310nm | 9.5 – 11.5 @1465nm | 9.3 – 11.2 @1480nm | 9.7 – 11.3 @1550nm |
Attenuation (dB/km) | <3 @980 | <2 @1310nm | <2 @1480nm | <2 @1480nm | <2 @1550nm |
Beat Length (mm) @633nm | ≤2.0 | ≤1.2 | ≤2.0 |
Proof Test (%) | 1 or 2 (100 or 200 kpsi) |
Cladding Diameter (μm) | 125 ± 1 |
Core-Cladding Concentricity (μm) | ≤0.6 |
Coating Diameter (μm) | 245 ± 15 | 400 ± 20 | 245 ± 15 | 400 ± 20 | 245 ± 15 | 400 ± 20 |
Coating Type | Dual Acrylate |
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