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LC25TAAJ57 Datasheet(PDF) 2 Page - Bookham, Inc. |
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LC25TAAJ57 Datasheet(HTML) 2 Page - Bookham, Inc. |
2 / 8 page Data Sheet 2 Parameters Parameter Conditions Min Typ Max Unit Threshold current (I th) 10 22 mA Slope efficiency 2 mW 0.04 0.09 mW/mA 3 mW 0.06 0.13 mW/mA 4 mW 0.08 0.17 mW/mA High Power [1] 0.143 0.43 mW/mA RF input reflection coef (S 11) [2] -10 dB Forward voltage 1.3 1.8 V Peak wavelength ( λ p) [3] 1527 1563 nm Dispersion penalty [4] 2 dB Time averaged spectral linewidth -20 dB 0.4 0.6 nm Side-mode suppression 34 40 dB Optical rise/fall time [5] 125 ps Monitor photo current 50 250 1200 µA Monitor dark current 100 nA Thermistor resistance 4.07 20.7 k Heatpump current ∆T = 64°C 1000 mA Heatpump voltage ∆T = 64°C 2.4 V Change of λ with laser temp. 8 to 50°C 0.09 nm/°C Change of λ over life and [6] -45 +145 pm operating conditions [1] The high power version provides 10 mW peak output power for 175 km applications and 7 mW peak ouput power for 360 km applications. [2] 50 measurement system, f = dc - 3 GHz. [3] Submount temperature between 8°C & 50°C start of life to achieve required λ p. [4] Dispersion penalty is compliant to a link length of 175 km or 360 km using an extinction ratio of 10dB. Fibre dispersion characteristics are derived from the following equation: where So =0.092 ps/(nm2 km) and λ 0 = 1302 nm. [5] Measurements determined from 20 - 80% Pk - Pk [6] For more information on wavelength control and drift over life refer to application note DR1670. To give symmetrical wavelength performance about the ITU channel wavelength (+/-95pm) offset the laser wavelength by –50pm at start of life set up. ) . /( ) ( 4 ) ( 3 4 0 km nm ps So D λ λ λ λ− = |
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