features: ?cw light source with integrated wavelength locker ?13dbm (min.) output power ?tunable over 4 itu-t grid channels (2.4nm) ?available at c band itu-t grid wavelengths between 1528.77-1569.99nm ?wavelength stability better than +/-25pm drift over 20 years operation and (0 - 70?) case temperature variation ?built-in optical isolator, thermistor, tec, wavelength monitor pin, power monitor pin ?polarization preserving (panda) fiber applications: long haul dwdm metropolitan dwdm applications at 10 gbs optical test equipment description: the fujitsu tunable ld module with wavelength locker (fld5f15ca-k) is a high power cw laser (13dbm) with polarization maintaining fiber. it is intended for use with an external modulator. the laser can be wavelength tuned across a 2.4nm range (4 itu-t 100ghz spaced channels) via adjustment of the chip temperature with the included tec. the tuned wavelength can be locked onto the desired itu-t grid channel via use of the included fabry- perot etalon. this laser is available at any of the 52 itu-t wavelengths in the c band (1528.77-1569.59nm). the device comes in a standard 14-pin butterfly package, operates between 0-70?, and requires 120ma of drive current (typical). parameter symbol condition ratings optical output power p f 30 cw mw laser forward current i f 250 cw ma photodiode reverse voltage v dr 20 v - photodiode forward current i pf 10 ma - cooler voltage v c 4.8 v note (1) laser reverse voltage v r 2 -v unit absolute maximum ratings (t c =25 c) - cooler current i c 2.0 a - storage temperature t stg -40 to +85 c - operating case temperature t op 0 to +70 c 1 edition 1.0 march 2001 tunable ld module with wavelength locker fld5f15ca-k
2 tunable ld module with wavelength locker fld5f15ca-k parameter symbol laser set temperature t set relative intensity noise rin conditions - - cw, pf=20mw, orl>40db, f=dc-7.5ghz t l =tset, tc=+70 c, pf=20mw t l = tset, tc=+70 c, pf=20mw tc, t l =+25 c tc, t l =+25 c unit c min. 11 limits db/hz -140 - peak wavelength p note (3) nm 51 - optical output power p f cw, tc=0 to +70 c mw - 20 - slope efficiency cw, pf=20mw, orl>40db ch. 1-ch.4, orl>40db cw, pf=20mw, orl>40db cw, pf=20mw, orl>40db mw/ma tracking error (note 1) te im=constant, pf(tc=25 c)=20mw, tc=0 to +70 c db +1.0 -0.5 - monitor current i m1 wavelength monitor current i m2 pf=20mw pf=20mw, wl locked ma ma 1.8 1.8 0.1 0.1 - operating forward current i op ma 200 - 120 - wavelength stability with case temperature - im1=constant, im2=constant, tc=0-70 c, 20 years pm 25 -25 - side mode suppression sr db - 33 - spectral width (-3db) ? mhz 10 -3 - cooler current ic a 1.8 -- cooler voltage vc v 4.6 -- thermistor resistance rth k ? 10.5 9.5 10.0 thermistor b constant (note 2) bk 3,630 3,270 3,450 optical isolation i s tc=0 to +70 cdb - 22 - extinction ratio te/tm cw, pf=20mw db - 20 - threshold current i th cw ma 345 - forward voltage v f cw, i f =30 ma, pin 3,13 v - - 2.2 - 0.2 - max. typ. note 1. te=10*log[pf(tc)/pf(25)] note 2. relation between resistance and temperature ( k) is: rth (t) = rth (25)*exp[b(1/t-1/298)] note 3. reference figure 5 wavelength table optical and electrical characteristics at (t l =t set , t c =25 c, bol, unless otherwise specified)
3 tunable ld module with wavelength locker fld5f15ca-k fig.4 spectrum wavelength (nm) relative intensity (db) 1540 0 -20 -40 -60 -80 1550 1560 fig. 2 temperature dependance of wavelength(acc operation) laser temperature, t ld ( c) wavelength (nm) 1547 1548 1549 1550 1551 10 20 30 40 fig. 1 forward current vs output power forward current, iop (ma) output power, pf (mw) 15 20 25 10 5 0 30 0 150 200 50 100 250 fig. 3 cooler voltage -current case temperature ( c) cooler currnet, i c (a) cooler voltage, v c (v) -1.0 3.0 4.0 2.0 0.0 1.0 -1.0 3.0 4.0 2.0 0.0 1.0 i c v c 02030 10 40 50 60 70 80 fig. 5 filter curve peak wavelength (nm) im2 ( a) 500 400 300 900 1000 1100 800 600 700 1547.0 1548.0 1549.0 1550.0 1551.0 1552.0 im2 im1 im2@lock point
4 tunable ld module with wavelength locker fld5f15ca-k note this device is not available with a fiber polarization axis aligned connector. the attached fujitsu connector is only for use at incoming inspection. a fusion splice is the recommended method for connecting this laser to an external modulator.
5 tec pd2 pd1 rth 765 432 1 8 9 10 11 12 13 14 1500min. fc-pc or fc-angled facet connector 23 0.7 29.97 0.25 8.17 0.2 17.24 0.25 15.24 0.25 2.54 0.25 5.4 0.5 pin 1 4-?.67 0.2 5.47 0.15 4.15 0.25 0.7 0.15 pin 7 pin 8 pin 14 14-0.5 0.1 5.41 0.25 14-0.1 0.05 26.04 0.25 20.83 0.25 22.0 0.25 15.2 0.3 12.7 0.15 5.08 0.15 8.25 0.5 ?.9 0.1 5.08 0.15 (?0) ?.2 0.3 8.89 0.15 top view # pin designations 1 temperature monitor 2 temperature monitor 3 laser cathode 4 power monitor (anode) 5 power monitor (cathode) 6 tehp (+) 7 tehp (-) 8 pd2(wave length monitor) cathode 9 pd2(wave length monitor) anode 10 nc 11 ground 12 laser cathode 13 ld anode, ground 14 nc (32) 8.25 0.5 ?a?package tunable ld module with wavelength locker fld5f15ca-k fujitsu limited reserves the right to change products and specifications without notice. the information does not convey any li cense under rights of fujitsu limited or others. 2001 fujitsu compound semiconductor, inc. printed in u.s.a. fcsi0101m200 fujitsu compound semiconductor products contain gallium arsenide (gaas) which can be hazardous to the human body and the environment. for safety, observe the following procedures: caution ?do not put this product into the mouth. ?do not alter the form of this product into a gas, powder, or liquid through burning, crushing, or chemical processing as these by-products are dangerous to the human body if inhaled, ingested, or swallowed. ?observe government laws and company regulations when discarding this product. this product must be discarded in accordance with methods specified by applicable hazardous waste procedures. for further information please contact: fujitsu compound semiconductor, inc. 2355 zanker rd. san jose, ca 95131-1138, u.s.a. phone: (408) 232-9500 fax: (408) 428-9111 www.fcsi.fujitsu.com fujitsu quantum devices europe ltd. network house norreys drive maidenhead, berkshire sl6 4fj united kingdom tel: +44 (0) 1628 504800 fax: +44 (0) 1628 504888 fujitsu quantum devices singapore pte ltd. hong kong branch rm. 1101, ocean centre, 5 canton rd. tsim sha tsui, kowloon, hong kong tel: +852-23770226 fax: +852-23763269 fujitsu quantum devices limited business development division 11th floor, hachioji daiichi-seimei bldg. 3-20-6 myojin-cho hachioji-city, tokyo 192-0046, japan tel: +81-426-43-5885 fax: +81-426-43-5582
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