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D2570H61 Datasheet(PDF) 4 Page - Agere Systems |
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D2570H61 Datasheet(HTML) 4 Page - Agere Systems |
4 / 12 page 4 Agere Systems Inc. D2570, D2526G, D2555 Wavelength-Selected Data Sheet, Rev. 3 Direct Modulated Isolated DFB Laser Module July 2001 D2526 Characteristics Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the result of engineering evaluations. Typical values are for information purposes only and are not part of the testing requirements. * Standard operating condition is 5.0 V reverse bias. † Ratio of thermistor resistance at 0 °C to thermistor resistance at 50 °C. Table 1. Electrical Characteristics (at 25 °C laser temperature) Parameter Symbol Test Conditions Min Typ Max Unit Slope Efficiency η LF = 2 mW (CW) 0.06 0.09 0.13 mW/mA Threshold Current ITH —— 14 30 mA Laser Forward Voltage VLF LF = 2 mW (CW) — 1.3 1.8 V Laser Submount Temperature TLASER —20 — 30 °C Monitor Reverse-bias Voltage* VRMON —3 5 10 V Monitor Current IRMON POL = 1 mW (CW) 0.1 0.3 1.5 mA Monitor Dark Current ID IF = 0, VRMON = 5 V — 0.01 0.1 µA Input Impedance ZIN —— 25 — Ω Thermistor Current ITC — 10 — 100 µA Resistance Ratio† — — 9.1 — 9.6 — Thermistor Resistance RTH TL = 25 °C 9.5 — 10.5 k Ω TEC Current ITEC TL = 25 °C, TC = 70 °C — 0.6 1.0 A TEC Voltage VTEC TL = 25 °C, TC = 70°C — 1.3 2.0 V TEC Capacity ∆TTC = 70 °C — — 50 °C Table 2. Optical Characteristics (at 25 °C laser temperature) Parameter Symbol Test Conditions Min Typ Max Unit Peak Optical Output Power PPEAK —2.0 — — mW Center Wavelength (See Table 10.) λcTL = 25 °C CW wavelength 1528.77 — 1610.06 nm Line Width (3 dB full width) ∆λ Modulated at 2.5 Gbits/s at rated power —2 10 MHz Side-mode Suppression Ratio SMSR CW 30 — — dB Optical Isolation — TC = 0 °C to 70 °C 30 — — dB Wavelength Drift (EOL) ∆λ Tested over 25-year lifetime —— ±0.1 nm Center Wavelength Drift with Case Temperature ∆λC/∆TC 0 °C ≤ TC ≤ 70 °C — — 1 pm/°C Wavelength Temperature Tuning Coefficient — — — 0.095 — nm/°C Tracking Error — TC = –20 °C/25 °C/70 °C — — 1 dB Table 3. Dispersion Performance Parameter Symbol Test Conditions Min Typ Max Unit Dispersion Penalty for Extended Reach DP 1800 ps/nm — — 2.0 dB |
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