FBT Coupler Polarization Maintaining Coupler Specifications Wavelength ≤ 1280 nm Parameter Wavelength ≥ 1280 nm Specified by customer Center Wavelength Operating Wavelength Range Center wavelength ± 10 nm Coupling Ratio 1% (± 3%) to 50% (± 5%) Excess Insertion Loss (slow axis input, including TDL) ≤ 0.7 dB ≤ 0.5 dB Polarization Extinction Ratio ≥ 15 dB ≥ 20 dB Return Loss ≥ 55 dB Directivity ≥ 55 dB Fiber Type PM Panda Fiber Operating Temperature 0° C to + 70° C Storage Temperature Package Dimensions - 40° C ~ + 85° C Light Duty ( B ) 3.0mm (Ф) x 60.0mm (L) 3.0mm (Ф) x 55.0mm (L) Medium Duty ( L ) 3.0mm (Ф) x 65.0mm (L) 3.0mm (Ф) x 60.0mm (L) Heavy Duty (K, R) 100.0mm x 12.0mm x 8.0mm *There will be 1.0 dB less for extinction ratio if connector is added. Note 1: All values specified are without connectors. Ordering Information P M C – – Align Axis S: Slow F: Fast – Port Number 12: 1 x 2 22: 2 x 2 13: 1 x 3 14: 1 x 4 – Coupling Ratio xy % : xy % EVEN: Even split 2210 Lind Ave SW, Suite 100 Renton, WA 98057 USA (425) 277-8000 ph (425) 277-5280 fax – Center Wavelength Examples 0980: 980 nm 1480: 1480 nm Fiber Length 1: 1 meter 2: 2 meter S: Special 0: 0.5 meter – – Pigtail Style (=Package style) B: bare fiber L: 900 m loose tube K: 2mm cable R: 3mm cable Connector 0: None 7: LC/UPC 1: FC/PC 8: LC/SPC 2: FC/APC 9: Special 3: SC/ PC A: FC/UPC 4: SC/APC B: SC/UPC 5: FC/SPC C: ST 6: SC/SPC [email protected] www.lightel.com