Helica™ In - Fiber Linear Polarizer The Helica™ In-Fiber Polarizer (IFP) is an all-glass, flexible polarizer for users requiring the best polarization extinction ratio (PER) available over a broad spectral range. The polarized light is scattered rather than absorbed, making this polarizer uniquely suitable for high power applications. IFPs are also available as patch cables that polarize, rather than simply maintain, the polarization of the input light. These patch cables are connectorized on both ends with high quality and robust FC/UPC, FC/APC, LC/UPC or LC/APC connectors manufactured to the strictest standards and tested to insure high extinction ratio and low insertion losses. Polarizers have been delivered to address specific spectral needs ranging from 800-2000 nm. Specifications and typical spectra for polarizers with central wavelengths at 1550, 1310, 1064 and 980 nm are shown below. Custom pigtails, jacketing, cabling and connectorization can be accommodated. Please speak to us about your specific needs. In-Fiber Linear Polarizer – unconnectorized (left) and connectorized patch cable versions (right)   Applications: Polarization measurement and control Coherent transmission Optical sensors Test and measurement instrumentation Navigation instrumentation R & D Fiber lasers Specifications: SPECIFICATIONS Central Wavelength1 980 nm 1064 nm 1310 nm 1550 nm Bandwidth >50 nm Polarizations Extinction Ratio 2 >30 dB Typical Insertion Loss <2 dB, <1 dB available (1000-1700 nm = LIL) Optical Return Loss -22 to -24 dB, -40 dB available (LRL) Polarizer Length 42 ± 2 mm Package Style Flexible, 2mm furcation tube (connectorized) or 900 micron furcation tube (unconnectorized) Pigtails3 PM = PANDA PM fiber SM = singlemode fiber Operating Temperature -40 to +85○C Storage Temperature -70 to +85○C 1 Other wavelengths available upon request 2 Typically the passing polarization travels along the slow axis. Fast axis alignment can be provided upon request. Polarizer is unidirectional. Degree of polarization > 40 dB. Polarization extinction ratio is >25 dB for connectorized parts. 3 Connectorization available upon request 4 Low Insertion Loss (LIL) OR Low Return Loss (LRL) are not both available together, at present. Ordering information: Options λ Central Wavelength Standard 980, 1064, 1310, 1550 nm Custom wwww = Customer specified: 800 to 2000 nm PT Pigtails Standard PMXX = Polarization Maintaining (PANDA), 1 meter long typical (PM01) SMXX = Singlemode, 1 meter long typical (SM01) Custom ttll = Customer specified: tt = fiber type, ll = pigtail length CON Connectors Standard FC/UPC, FC/APC, LC/UPC or LC/APC (specify) Custom CC/CC = Customer specified LIL or LRL Low Return Loss LIL = <1 dB insertion loss - available for 1000-1700 nm LRL = <-40 dB Back-reflection C Custom C = Custom – enter for every custom option above (including LIL and LRL) or other custom requirements to be specified For example: IFP-1550-PM01 In-Fiber Linear Polarizer, 1550 nm central wavelength, PM fibers, 1 meter long pigtials, No connectors IFP-1310-PM02-FC/PC-LRL-C    In-Fiber Linear Polarizer, 1310 nm central wavelength, PM fibers, 2 meter long pigtails, FC/APC connectors both sides, Low return loss, Custom IFP-1480-SM01-LIL-C                  In-Fiber Linear Polarizer, 1480 nm central wavelength, SM fibers, 1 meter long pigtails, No connectors, Low insertion loss, Custom Benefits: Power handling: Unwanted polarization is scattered over length of grating rather than being absorbed. Testing conducted by customers to date, has indicated no ill effects to polarizer up to 10 W CW and 250 kW peak pulse power (few picoseconds pulse). A thin metal tube (flexible “once”) can also be added to provide a base for heat sinking. Environmental ruggedness: Operating temperatures from -40 to +85 °C and bend insensitive. Form Factor: No rigid portion / completely flexible, bend insensitive and short polarizing portion. Pigtails can be made shorter than standard 1 meter, as needed. Cost: In addition to performance advantages, the IFP is advantageously priced when compared to: In-line devices, OR Bulk optic devices when their requisite costs of integration are included, OR Polarizing fiber and the length of such fiber required to obtain comparable polarization extinction ratios. Exemplary Spectra: 980 nm 1060 nm 1310 nm 1550 nm   Polarizer as Pressure Sensor: The schematic below, left, demonstrates usage of a chiral polarizer as a pressure sensor. The input and output fibers are inexpensive conventional single mode fibers (which could be miles long). The graph on the right shows transmission through the sensor as the fiber is loaded, demonstrating a dynamic range greater than 30 dB. All information contained herein is believed to be accurate and is subject to change without notice. No responsibility is assumed for its use. Chiral Photonics, Inc., its subsidiaries and affiliates, or manufacturer, reserve the right to make changes, without notice, to product design, product components, and product manufacturing methods. Some specific combinations of options may not be available. Please contact Chiral Photonics, Inc. for additional information. Printer friendly PDF version