LASER DIODE
Laser diode
TOSA type, 1310 nm FP (Fabry-Perot) laser diode
L9278-14
Features Applications
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1310 nm FP (Fabry-Perot) laser diode
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φ1.25 mm sleeve type TOSA (Transmitter Optical
Sub-Assembly)
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High-speed response: 2.5 Gbps
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Optical output: 0.2 mW
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Optical fiber communication
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Gigabit ethernet
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Fiber channel
1
■ Absolute maximum ratings (Ta=25 °C)
Parameter Symbol Value Unit
Ith + 14 (CW)
Forward current IF Max. Ith + 28 (pulse) *1mA
Maximum reverse voltage VR Max. 2 V
Forward current (photodiode) IFm Max. 2 mA
Maximum reverse voltage
(photodiode) VRm Max. 20 V
Operating temperature *2Topr 0 to +70 °C
Storage temperature *2Tstg -40 to +85 °C
*1: Duty ratio 50 %
*2: No condensation
■ Electrical and optical characteristics [Ta=25 °C, IF=Ith + 10 mA, SM fiber (9.5/125 µm), CW]
Parameter Symbol Condition Min. Typ. Max. Unit
Forward voltage VF- 1.1 1.5 V
Threshold current Ith - 5 15 mA
Fiber end output PF-0.2-mW
Peak emission wavelength λp1290 1310 1330 nm
Spectral half width ∆λ -2.08.0nm
Rise/Fall times tr, tf 20 to 80 %, Ibias=Ith -200 -ps
Monitor current (photodiode) Im VRm=3.5 V - 0.35 - mA
Dark current (photodiode) IDDark state, VRm=3.5 V - - 100 nA
Tracking error TE CW, APC - - 1.5 dB
HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: (81) 053-434-3311, Fax: (81) 053-434-5184, http://www.hamamatsu.com
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 08152-3750, Fax: (49) 08152-2658
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777
North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171 41 Solna, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01
Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741
Information furnished by HAMAMATSU is believed to be reliable. Ho w ever, no responsibility is assumed for possible inaccuracies or omissions.
Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2005 Hamamatsu Photonics K.K.
Cat. No. KLED1041E02
Feb. 2005 DN
Laser diode L9278-14
4.17 ± 0.1
(4 ×) 0.45
5.94
-0.1
+0.05
6.23
(90˚)
* The center of sleeve to the side surface
3.38
3.05 ± 0.5 *
8.8 ± 0.6
(13) 1.27 ± 0.1
4.04
6.35
5.6
2.0 CASE
CATHODE (LD)
ANODE (PD)
CATHODE (PD)
ANODE (LD)
(OPTICAL REFERENCE
PLANE)
5.6
2.92 ± 0.05
1.25
2
KLEDA0079EB
■ Dimensional outline (unit: mm, tolerance unless otherwise noted: ±0.2)
■ Eye diagram
Bit rate=2.5 Gbps, NRZ, PN=31,
Bias current=Ith, Modulated current=20 mApp Bit rate=2.5 Gbps, NRZ, PN=31
1.866 GHz, 4th Bessel filter used
