Guide to: ClearLiteTM Photosensitive Photonic Fibers Fiber Name PhotoSilTM 1310-11D PhotoSil 1310-11P Operating Wavelength (nm) MFD at Oper. Wavelength Numerical Aperture Clad/Coating Coating Diameter (m) Type Order by Part Number 1310/1550 1310/1550 9.3 / 10.5 9.3 / 10.5 0.11 0.11 125/245 125/155 BF05476 BF05476-01 How do you choose which ClearLite fiber is best for your application? When photosensitivity is required, either fiber in the ClearLite Photosensitive Photonic Fiber line can be used. The difference between the two fibers lies in their coatings. For most applications, acrylate is recommended. When extreme temperatures are likely to be encountered either during installation or long-term use, we recommend PYROCOATTM, which is our proprietary polyimide coating. This specialized treatment allows the fiber to perform well in both temperature extremes, from -65 to +300C. Applications Dual Acrylate Polyimide What is the ClearLite fiber difference? OFS's proprietary fiber design and manufacturing process yield optical fibers with enhanced photosensitivity, allowing users to maintain fiber characteristics while writing gratings. No hydrogen pretreatment (or "loading") is necessary. We have extensive design capabilities and specialty fiber manufacturing expertise in this unique field and offer assistance with your product selection and design support requirements. OFS is vertically integrated and manufactures fiber preforms using the OFS-patented MCVD process which allows for superior control over modification of the index variation and the dopants in the barrier region (cladding immediately surrounding the core of the fiber). Our well-controlled fiber draw processes result in tight tolerances and minimum lot-to-lot variation in fiber manufacture even during highvolume production. Major component manufacturers worldwide value our experience and specify OFS fibers for their high-end components. OFS is an ISO 9001 certified facility and has been manufacturing optical fiber for over 25 years. For help and information in selecting a ClearLite Photosensitive Photonic Fiber please contact us. Fiber Bragg grating-based technologies and related components use photosensitive fibers. Doc. SM-BR006-001-0503 Distributor: LASER COMPONENTS GmbH, Germany, Phone: +49 (0)8142 28640, Fax: +49 (0)8142 286411, info@lasercomponents.com ClearLiteTM Photosensitive Photonic Fibers PhotoSilTM 1310-11D and 1310-11P Fibers Data Sheet Description Applications ClearLite Photosensitive Photonic Fibers are specially engineered to provide fiber solutions to Fiber Bragg Grating (FBG) manufacturers. These photosensitive fibers allow the inscription of FBGs in the core of the fibers utilizing conventional techniques. FBGs and grating-based fiber components and devices are widely used in optic fiber telecommunication and sensing applications. They are compatible with standard single-mode fibers for low splice and insertion loss and incorporate features that improve clad mode suppression. Our proprietary fiber design and manufacturing process yield optical fibers with enhanced photosensitivity, allowing users to maintain fiber characteristics while writing gratings without hydrogen pre-treatment of the fiber. ClearLite Photosensitive Photonic Fiber can generate an index change of greater than 10-4 under the typical writing conditions listed on the reverse of this page. However, end users must determine the conditions for any specific writing process or type of grating since photosensitivity also depends on variables in the writing process. * Pump diode laser wavelength stabilizer with FBGs * Fiber-grating-based sensors and sensor arrays * FBG-based optical components and devices Features and Benefits * 0.11 NA * 125 m cladding/245 m Acrylate coating or 155 m PYROCOAT coating * Controlled reflectivity ideal for sensor gratings ClearLite fibers can be customized with modified optical, geometric, or coating specifications for various applications. Photosensitive fibers can be coated with UV transparent coatings that permit writing gratings without stripping and recoating the fiber. For higher temperature use, PYROCOATTM (OFS' proprietary polyimide coating) is an ideal choice. We have extensive design capabilities and specialty fiber manufacturing expertise and offer assistance with your product selection and design support requirements. Fiber Construction: PhotoSil 1310-11P Fiber Construction: PhotoSil 1310-11D Acrylate Coating Drawing not to scale Silica Clad Silica Core PYROCOAT Coating Silica Clad Silica Core Drawing not to scale Distributor: LASER COMPONENTS GmbH, Germany, Phone: +49 (0)8142 28640, Fax: +49 (0)8142 286411, info@lasercomponents.com Fiber Specifications PhotoSil 1310-11D Fiber PhotoSil 1310-11P Fiber 1310 or 1550 nm 1310 or 1550 nm ) 1290 nm ) 1290 nm Optical Properties Operating wavelength Second-mode cut-off wavelength Mode field diameter @ 1310 nm 9.3 0.5 m 9.3 0.5 m Mode field diameter @ 1550 nm 10.5 1.0 m 10.5 1.0 m Numerical aperture (nominal) 0.11 0.11 Attenuation @ 1310 nm < 6.0 dB/km < 6.0 dB/km Attenuation @ 1550 nm < 80.0 dB/km < 80.0 dB/km Induced attenuation @ op. wavelength (nominal) [100 Turns, 30 mm radius mandrel] < 0.5 dB Index of Refraction (6) < 0.5 dB 0.32% 0.32% Dimensions/Geometric Properties Core diameter (nominal) 8.4 m 8.4 m Cladding diameter 125 2 m 125 2 m Coating diameter 245 15 m 155 15 m 2:1 2:1 Diameter ratio of doped clad/core ) 1.0 m ) 1.0 m Core/Clad Offset ) 0.3% ) 0.3% Core non-circularity (ovality) ) 6.0% ) 6.0% Clad non-circularity (ovality) ) 2.0% ) 2.0% Coating concentricity * 80% * 80% Dual UV Acrylate PYROCOAT -40 C to +85 C -65 to +300C Short-term bend radius * 10 mm * 10 mm Long-term bend radius * 17 mm * 17 mm * 100 kpsi (0.689 GPa) * 100 kpsi (0.689 GPa) Copyright (c) 2003 Fitel USA Corp. All Rights Reserved. BF05476 BF05476-01 ClearLite, PhotoSil, and PYROCOAT are trademarks of Fitel USA Corp. Core/clad concentricity Buffer and/or Coating Description Coating material Operating temperature Mechanical and Testing Data Proof test level ORDER BY PART NUMBER This document is for informational purposes only and is not intended to modify or supplement any OFS warranties or specifications relating to any of its products and services. Typical Writing Conditions Doc. SM-SS006-001-0403 Laser type Excimer (pulsed) Writing wavelength Power density Pulse energy Argon (CW) 248 nm 244 nm NA 3 kw/cm3 100 mj/cm2 NA Pulse frequency 20 Hz NA Exposure time 10 min 15 min Grating length 10 mm 10 mm Typical index change > 10-4 > 10-4 www.lasercomponents.com Issue: 07/03 / V2 / HW / www/pdf/ofs/ cl_photosensitive_fiber.pdf (replaces fi_phisil.pdf) LASER COMPONENTS GmbH, Werner-von-Siemens-Str. 15, D-82140 Olching, Phone: +49 (0)8142 28640, Fax: +49 (0)8142 286411 info@lasercomponents.com