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A370-11A Datasheet(PDF) 4 Page - Agere Systems |
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A370-11A Datasheet(HTML) 4 Page - Agere Systems |
4 / 8 page A370-Type Analog Data Sheet Uncooled Laser Module March 2001 4 Lucent Technologies Inc. Electro/Optical Characteristics (continued) Analog Operation The A370 Series Laser Module has the capability of being used in a wide variety of analog operations. These may include several channels of pure video signals, or a mix of video signals with digital data channels riding on analog carriers. It is difficult to prepare a single battery of testing conditions that will satisfy all applications. The following table contains a set of testing conditions that Lucent believes will give a broad indication of the performance of the A370 Series Laser Module. Please contact your local Field Application Engineer if different testing conditions and parametric limits are required. The distortion characteristics are measured using a two-tone test. The frequencies are 13 MHz and 19 MHz. The second-order distortion components are measured at f1 + f2 = 32 MHz and f1 – f2 = 6 MHz. All third-order distor- tion components are measured in the frequency range of 5 MHz—200 MHz, and they meet the required level. All measurements are made with SC-SPC connectors on the laser module pigtails. * See Table 5 for more information. † Premium performance. Table 3. Analog Characteristics Parameter Symbol Test Conditions Min Typ Max Unit Output Power* PO CW, T = –40 °C to +85 °C — 1.0 — mW Relative Intensity Noise RIN CW, Freq. = 5 MHz to 300 MHz; no fiber loss, T = –40 °C to +85 °C — –140 –130 dB/Hz Modulation Bandwidth BW –3 dB, T = –40 °C to +85 °C 1.0 — — GHz Second-order Distortions — T = 25 °C, OMI = 0.2; Two-tone test: f1 = 13 MHz, f2 = 19 MHz; 20 km of fiber, (7 dB loss) plus connector loss, f1 ± f2 — –48 –50† –40 –45† dBc dBc Third-order Distortions — T = 25 °C, OMI = 0.2; Two-tone test: f1 = 13 MHz, f2 = 19 MHz; 20 km of fiber (7 dB loss), plus connector loss, all peaks from 5 MHz—50 MHz meet this level — –60 –60† –50 –50† dBc dBc RF Bandpass Flatness BPF Peak to valley: 5 MHz to 200 MHz — — 1.0 dB Spurious Noise NSP T = 25 °C, OMI = 0.2; ref. to one-tone: 5 MHz to 50 MHz, 20 km of fiber, (7 dB loss) plus connector loss — –58 –58† –54 –54† dBc dBc Spurious Noise (carrier off) N'SP T = 25 °C — –45 –45† –37 –40† dBc dBc |
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