LC25WC153BGJ28

Data Sheet 2.5 Gb/s CWDM Buried Het Laser 80Km reach LC25WC This laser module provides a fast route to CWDM by providing a drop in replacement on existing TDM or WDM circuit packs with minimum redesign and verification work. The product employs the Bookham strained layer MQW Buried Heterostructure DFB laser chip, and has been designed specifically for use in Coarse Wavelength Division Multiplexed (CWDM) 2.5 Gb/s optical fibre trunk systems. The device is packaged in a hermetic 14-pin butterfly package incorporating an isolator and monitor photodiode for control of the power of the laser over life and all operating conditions. The device is available with a number of power options depending on application and link span requirements. Features: • Drop in replacement onto TDM and WDM card • 2.5 Gb/s operation • Up to 10mW optical output power available • Narrow spectral line-width • Internal TEC with precision NTC thermistor for temperature control • 1470nm to 1610nm at 20nm compliant to ITU G.694.2 • Code reduction with single product for reaches up to 80km • GaInAsP SLMQW DFB single frequency laser chip • InGaAs monitor photodiode • Hermetically sealed 14-pin butterfly package with optical isolator • RoHS compliant Applications: • CWDM metro 1 Data Sheet Parameters Parameter Threshold current (Ith) Slope efficiency by product 2 mW 3 mW 4 mW 10 mW [1] Conditions Min Typ 10 Max 22 0.09 0.13 0.17 0.43 -10 Unit mA mW/mA 0.04 0.06 0.08 0.143 RF input reflection coef (S11) Forward voltage Channel wavelengths available Peak wavelength for channel Dispersion penalty at 80 km Time averaged spectral linewidth Side-mode suppression Optical rise/fall time Monitor photo current Monitor dark current Thermistor resistance Heatpump current Heatpump voltage Change of λp with laser temp. dB V nm nm dB nm dB 1.3 ITU G.694.2 [2] [3] 1.8 1610 λp+4nm 2 0.6 1470 λp-4nm λp 0.1 30 40 -20 dB [4] 125 50 250 1200 100 10 ps µA nA k 70°C case temperature 70°C case temperature 20 to 35 250 600 1.0 0.09 900 2.4 mA V nm/°C [1] 50 measurement system, f = dc - 3 GHz. [2] Submount temperature between 20°C & 35°C start of life to achieve required λp. [3] Standard product dispersion penalty will be compliant to the specified link length of 80 km using an extinction ratio of 10 dB. Fibre dispersion characteristics are derived from the following equation So λ D(λ ) = (λ − 03 ) ps /(nm.km) 4 λ Where So = 0.092 ps/(nm2.km) and λ = 1302 nm. [4] Measurements determined from 20 - 80% pk - pk. 4 Absolute Maximum Ratings Parameter Case operating temperature Laser submount operating temperature Storage temperature Laser current above Ith Laser reverse voltage Laser reverse current Monitor diode bias Heatpump voltage Fiber bend radius 30 Min 0 20 -40 Max 70 35 85 100 1.0 10 -10 2.4 Unit °C °C °C mA V µA V V mm 2 Data Sheet Reliability/Quality Meets Qualification requirements of Telcordia / Bellcore GR468-Core for central office environment. Operating reliability 1466nm CLASS IIIb LASER PRODUCT 5 THIS PRODUCT COMPLIES WITH 21 CFR 1040.10 ISO14001:1996 EMS 504193 TL9000 Rev 3.0 (ISO9001:2000) FM15040 Caution - use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. BH13095 Rev 1.0 January 2007 ©Bookham 2005. Bookham is a registered trademark of Bookham Inc.