ODL-340 Optical Delay Line Module - Santec - #1

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Features Principle Applications Optical Delay Line Module ODL-340 Simple and unique air gap delay mechanism Max. delay up to 330 psec Low PDL (< 0.1 dB) Low insertion variation (<0.6dB) Delay tuning knob with lock function Optical time domain effect measurements PMD compensation experiments Time division multiplexing Fiber interferometers The ODL-340 module uses an air gap method to generate a delay in the optical signal. The duration of the delay is controlled by adjusting the position of a prism reflector so that the optical distance between the input and the output collimators is varied. The device allows an adjustment of up to 49.5mm, corresponding to an optical delay of up to 330ps. Collimator Light In Light Out ÄL Prism Air gap tuning method A variable optical delay is achieved using the "air gap tuning method" to vary the path length. Coupled with santec's linear sliding technique, very high accuracy delays of 330 psec are possible using the ODL components. Delay: t=2ÄL/c, where 2ÄL is the air gap (optical path) difference, c is the speed of light. Note: “Delay” is a relative value; absolute delay of the module is not precisely specified. SANTEC OPTICAL COMPONENTS Optical Delay Line Series