LC25ETCAJ28

Data Sheet 2.5 Gb/s Buried Het 4x100GHz Tunable Laser with Etalon Stabilisation and extended reach option LC25ET This laser module employs the Bookham gain coupled SLMQW buried heterostructure DFB laser chip, and has been designed specifically for use in Wavelength Division Multiplexed (WDM) 2.5 Gb/s long distance optical fibre trunk systems. The device is packaged in a hermetically sealed 14-pin butterfly package incorporating an isolator and locking optics to lock and stabilise wavelength and power of the laser over life. The module is tunable by means of the internal thermo-electric cooler over four adjacent 100 GHz ITU WDM channels. The device is available with a number of power options and wavelength schemes, which are customizable to individual customer specification. The internal etalon wavelength stablilisation and low chirp performance makes this product compliant with 50GHz optical channel spacing. Features: • 2.5 Gb/s Operation • Tunable over four separate channels at 100 GHz channel spacing • Integrated wavelength locking optics • Entire C band ITU wavelengths available (1528 to 1563 nm) • Narrow spectral line-width • Hermetically sealed 14-pin butterfly package with optical isolator • Internal TEC with precision NTC thermistor • Extended reach performance up to 360 km with low dispersion penalty • 50GHz optical channel spacing compliant for interlay or future upgrade • RoHS compliant Applications: • Optical Service Channel (OSC) applications in DWDM transmission systems using optical amplifiers. 1 Data Sheet Parameters Parameter Threshold current (Ith) Slope efficiency 2 mW 3 mW 4 mW High Power [2] Conditions Min Typ 10 Max 22 0.09 0.13 0.17 0.43 -10 Unit mA mW/mA mW/mA mW/mA mW/mA dB V nm dB nm dB [1] 0.04 0.06 0.08 0.143 RF input reflection coef (S11) Forward voltage Peak wavelength (λp) Dispersion penalty Time averaged spectral line width Side-mode suppression Optical rise/fall time Monitor photo currents Monitor dark current Thermistor resistance Heatpump current Heatpump voltage Change of λ with laser temp. Optical spectral window 1.3 [3] [4] 1.8 1563 2 1527 -20 dB 34 [5] 0.4 40 0.6 125 40 250 360 50 ps µA nA k mA V nm/°C ∆T = 64°C 8 to 50°C 4.07 20.7 1000 2.4 0.09 ∆T = 64°C Over life & temperature including chirp [6] -9 +9 GHz [1] The high power version provides 10 mW peak output power for 175 km applications and 7 mW peak output power for 360 km applications. [2] 50 measurement system, f = dc - 3 GHz. [3] Submount temperature between 0°C & 40°C start of life to achieve required λp. [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: 4 0 3 D(λ ) = where So =0.092 ps/(nm2 km) and λ0 = 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. So λ (λ − ) ps /(nm.km) 4 λ 2 Data Sheet 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 Heat pump current Heat pump voltage Fibre bend radius 30 Min 0 8 -40 Max 70 50 85 100 1.0 10 -10 1 2.4 Unit °C °C °C mA V µA V A V mm Reliability/Quality Meets Qualification requirements of Telcordia / Bellcore GR468-Core for central office environment. Operating reliability 1510nm CLASS IIIb LASER PRODUCT 6 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. BH13170 Rev 1.0 January 2007. ©Bookham 2006. Bookham is a registered trademark of Bookham Inc.