Request InfoTerahertz Technologies Inc.The C-995 phase-locked loop optical chopper provides crystal-controlled chopping rates of 4 Hz to 5 KHz using only one blade. The use of direct digital synthesis permits the rate to be set to a precision of 0.001 Hz and provides quartz-crystal stability. Frequency settings may be made via front-panel controls or its bidirectional RS-232 port, or the device may be phase-locked to a user-supplied external clock. Both enclosed and open-style chopper heads are available.See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra February 2023 IssueDual-Port Test SolutionThe FTBx-88480 dual-port test solution from EXFO Inc. enhances technician productivity for fiber optic transmission rates from 1 to 400 G. 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