P.B.R. Patch CordRodent Proof Fiber Optical CableA New Born Star for the Utility RoomDesigned for the last ten meter in optical network FTTHPatent No. ZL 2010 2 0137340.6
PRODUCT DESCRIPTIONFiber Optic Patch cord featured with Resistance to Lateral Pressure and Bending .Manufactured by applying special materials and workmanship plus PBR patch cord (Specific Featured) ‐ leads to excellent characteristics of resistance to compressive and temperature ‐50 ~ ‐70 .Using PBR patch cord to improve the jumper’s resistance to pressure and save the space in coiling the patch cord.PBR patch cord can be installed as copper wire.
Design MotivationExi Problems of Current Patch Cords: Improper pressure acted on the jumper while winding will lead to weakening or interruption of optical signals. Bending Radius of ordinary jumpers : 10D. Right‐angled bending of jumper will lead to interruption to the light signals. Best Solutions: PBR patch cord has an excellent ability of resistance to lateral pressure. PBR patch cord features a minimum Bend Radius : 5D. PBR patch cord will satisfy the need as to Anti‐ bending at right angles .
PBR FeaturesPBR Patch Cord as Copper featuring excellent anti‐compression performance. The Jumper’s Squeeze Pressure Value ＞1000NMinimum Bend Radius 5D with an additional loss of bending 100 times smaller than the average jumper; Easy to install as it can be used in small radius installation requiring the right‐ angled turn bending or circling within a small enclosure or in any like scenarios.Anti‐Right‐Angle Bending Withstanding right‐angle bending 10 times in number yet the optical signal loss in light transmission is less than 0.5dB.Excellent capacity of high power endurance as at R<10mm,500mm/W the temperature of the coating layer of the jumper is below 85°C good for the protection of Fiber and the opening of Wavelength Division Multiplexing
Micro Bending LossCauses of Micro Bending Loss : Non‐uniform external force acting onto the side of fiber can cause the fiber slightly bent by micron (10ˉ6m) level. Loss is thus formed at the bending place where the transmission mode of light resulted in the mode‐ conversion or in radiation mode (Due to light leakage from fiber core).Solutions: PBR fiber optic cable using special materials and processes can protect the fiber from the lateral pressure and bending and can avoid the micro bending loss thus caused.
The Solution 1.The tight buffered inner layer isolates the transmission of external force thus the optical fiber is as in the hollow tube. 2.Meanwhile to avoid damaging the fiber when the tight buffered sheath is meant to be removed.
Comparison Chart Ordinary Armored P.B.R. Patch Cord Patch Cord Patch CordWeight( Per 10M) 82g 140g 86gTensile strength ≥200N ≥200N ≥200NCompressive Strength ≥500N/100mm ≥1000N/100mm ≥1000N/100mmMinimum bend radius ≥ 10 D ≥30 D ≥ 5 DOutside Diameter 3.0mm 3.0mm 3.0mm
Field Test Photos – Bending Wound Ordinary Patch cord PBR Patch cord
Field Test Photo — Right‐angled BendingOrdinary Patch cord PBR Patch cord
Field Test Photo ‐ Forklift Roll Test extruding Armored Cable; Signal Attenuation value shown
Field Test Photo‐Forklift Roll Test extruding Ordinary Cable;Signal Attenuation value shown
Field Test Photo‐Forklift Roll Test extruding PBR Cable;Signal Attenuation value shown
Application scenarios comparison Ordinary Pigtail Armored Pigtail PBR Pigtail Rodent Performance Poor Good Good Good Good Anti‐Lateral pressure Poor (≥500N/100mm) (≥1000N/100mm) (≥1000N/100mm) Obedience of excess cable Good Poor Good Outer Diameter of Pigtail 3.0mm/2.0mm 3.0mm 3.0mm/2.0mm Convenience of cable splicing Good Poor (and special tool required) Good Engine Room √ √ √ Confined Space √ √ √Applicable Interior Open √ √ √Occasions Space Field Open Space X √ X Poor (armored layer need Convenience of On‐Site Good professional Good Termination stripping tool) Tightness of Connectors Good Poor Good Termination
Application ShowcaseBefore Adjustment After Adjustment
Application ShowcaseAdjusted Cable Spool Tray Field Site Custom Fixed‐Length FC Connectivity
Application ShowcaseOriginal Groove Cabling After sheaved Cabling
40G WDM Operational Under Fiber Bending (Network Field : Guang Dong Province in China)The field test performed against the Anti‐microbend pigtail curled with 5 tiny circling and of a bend diameter 1.5cm each , the signal performance data observed there‐after is as follows:Optical power with the optical power input of ‐9.1dbm, the result shows that there’s an increase in attenuation of 0.2dbm compared with what observed before the bending of the pigtail.BER Performance Before test, the Bit Error Correction was 9, which is at the level of 10^9 .Dispersion Properties The result shows that Dispersion Compensation value is 10ps/nm.Compared to before bending, the amount of dispersion compensation increased only by20ps/nm, which is still within the normal range.ConclusionBased on the result of from this Application test against a 40G Wavelength Divisionsystem, there’s only small differences on performance before and after adding an Anti‐microbending pigtail onto the WDM. Also, the optical power and dispersion are in the normal range as expected. While the BER Performance varies within the range of 10^9 ~ 10^10, it still meets with the normal operation demand. With the superiority of the anti‐bend and resistance to bend, the Anti‐microbending pigtail still fulfils the 40G high‐speed wavelength division system performance requirements while providing more advantage by taking up less space and smaller footprints.