skl57474x siemens aktiengesellschaft page(1/4) 2/99 specification coax-bidi ? 1310/1550 nm designed for application in fiber-optic networks laser diode with multi-quantum well structure ternary photodiode at rear mirror for monitoring and control of radiant power hermetically sealed component, similar to to 46 sm pigtail with optional flange or receptacle ternary photodiode coupled with wdm for receiving operation maximum ratings output power ratings refer to the sm fiber output. the operating temperature of the submount is identical to the case temperature module symbol values unit operating temperature range at case t c - 40... +85 c storage temperature range t stg - 40... +85 c soldering temperature tmax = 10 s, 2 mm distance from bottom edge of case t s 260 c laserdiode symbol values unit direct forward current i f max 120 ma radiant power cw f e 1mw reverse voltage v r max 2v monitor diode symbol values unit reverse voltage v r max 10 v characteristics all optical data refer to the optical port (10/125 m m sm fiber), t c =-40...+85c laser diode symbol values unit optical output power f e >0,4 mw emission wavelength center of range f e =0,2 mw l 1260...1360 nm
skl57474x siemens aktiengesellschaft page(2/4) 2/99 spectral bandwidth f e =0,2 mw (rms) dl <5 nm threshold current i th 2...55 ma forward voltage f e =0,2 mw v f < 1,5 v radiant power at threshold f eth < 40 w slope efficiency h 10...150 mw/a differential series resistance r s < 8 w rise time/fall time t r , t f < 1 ns monitor diode symbol values unit dark current, v r =5v, f e = 0 i r <200 na photocurrent, f e =0,2mw 30 ... 400 a capacitance, v r =5v, f = 1mhz c 5 <10 pf tracking error, v r =2v (see note 1) te -1...1 db detector symbol values unit dark current, v r =2v, f e = 0 i r < 100 na spectral sensitivity, v r =2v, l = 1300 / 1550 nm, s l > 0,30 a / w capacitance, v r =2 v, f = 1mhz c 2 <1,5 pf rise and fall time, v r =2v, 10%-90% t r , t f < 1 ns optical crosstalk (see note 2) crtopt <-27 db electrical crosstalk (see note 3) crtel <-50 db note 1: the tracking error te is the variation rate of f e at constant current i mon over a specified temperature range and relative to the reference point: i mon,ref =i mon (t= 25 c, f e = 0,2 mw). thus, te is given by: te db tc c ec e e = - 10 25 25 log f f f note 2: optical crosstalk is defined as crtopt=10 * log(i det,0 /i det,1 ) with: i det,0 the photo-current with f e =0,2mw, cw laser operation, v r =2v, with minimum optical return loss from fiber end and i det,1 the photocurrent without f e , but 0,2mw optical input power, l = 1550nm (1300nm).
skl57474x siemens aktiengesellschaft page(3/4) 2/99 note 3: electrical crosstalk is defined as crtel=20 * log(i det el /i laser ) with: i det,el the current in the photodiode generated by electrical crosstalk (measured with laserbias below threshold) and i laser the modulation current for 100% modulation. the specified value is valid in connection with a crosstalk optimized test- fixture ordering information: type ordering code connector skl57474a q?????-p xxxx din skl57474g q?????-p xxxx fc / pc component with other connector types on request package dimension:
skl57474x siemens aktiengesellschaft page(4/4) 2/99
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