OKI OL3492LR, OL3492N Datasheet
OL3492N/LR
1310nm MQW Laser Diode Uncooled Coax Module with Single Mode Fiber
DESCRIPTION
The OKI OL3492N/LR is a 1310nm MQW Laser Diode in a PCB mountable coaxial package with single
mode fiber and low relative intensity noise (RIN).
FEATURES
• SMF output: 3mW
• Low RIN
OUTLINE DIMENSIONS
• Wide operating range
• MQW structure
1.0
CIRCUIT
6.4
2
3
4
1
ø4.0
2.0
12.7
17.0
ø0.45 (4x)
7.0
13.0
ø2.2 (2x)
4.0
Dimensions in mm.
23.6
LD
2
(Case)
PD
4 3
ø6.8
1
Pin No. Function
1 LD cathode
2 LD anode (case)
3 PD anode
4 PD cathode
1OKI SEMICONDUCTOR
■
OL3492N/LR ■ ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
[1]
Parameter Symbol Rating Unit
Fiber output power P
f
3mW
Laser diode forward current If(LD) 150 mA
Laser diode reverse voltage V
(LD) 2 V
r
Photo diode reverse voltage Vr(PD) 20 V
Operating temperature T
Storage temperature T
Soldering (max. 10 sec) T
opr
stg
sld
-40 to +85
-40 to +85
260
°
C
°
C
°
C
1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. Functional operation should be restricted to the conditions
as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability.
Recommended Operating Conditions (TA = 25 °C)
Rated Value
Parameter Symbol Condition
Threshold current I
Fiber output power P
Forward voltage V
Center wavelength
Spectral width
[1]
Monitor current I
Photo diode dark current I
Rise time
Fall time
Carrier to noise ratio
[2]
th
f
f
λ
c
σ
P
m
dark
τ
r
τ
f
If = Ith + 40 mA 2 – – mW
If = 30 mA – – 1.5 V
Pf = 2 mW 1290 1310 1330 nm
Pf ave. = 1 mW 200 – –
Vr(PD) – 0.5 20 nA
I
Pf ave. = 1 mW, 10-90%
CNR OMI = 40% @25 MHz 53 – – dB
– – 10 20 mA
= 2 mW – – 2.5 nm
f
bias
= I
th
– – 0.5 ns
– – 0.5 ns
Relative intensity noise RIN f = 25 MHz BW = 4 MHz – – -135 dB/Hz
1. Spectral Width: RMS x 1, CW.
2. Reflection = -35 dB, Rx noise = 10 pA/Hz
1/2
, Fiber = 1 m, Pf = 1 mW Ave.
UnitMin Typ Max
µ
A
FIber Pigtail Specifications
Parameter Rated Value Unit
Type SM –
Mode Field Diameter 10 ±1
Cladding Diameter 125 ±2
Jacket Diameter 900
Length 1 (Min.) m
Connector FC/SPC –
2 OKI SEMICONDUCTOR
µ
m
µ
m
µ
m
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