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PRODUCT INFORMATION

840

nm

2B454

VCSEL Laser Diode

Datacom

This Vertical Cavity Surface-

Emitting Laser is designed for Fibre

Channel, Gigabit Ethernet, ATM and

general applications. It incorporates a

photodiode to monitor the optical

power and allow for feedback control.

For eye safety, the optical power is

attenuated to comply with IEC Laser

Class 1 requirements.

Optical and Electrical Characteristics

PARAMETER

SYMBOL

MIN.

TYP

.

MAX.

UNIT

(25擄C Case Temperature)

TEST CONDITION

Fiber-Coupled Power

Optical Power

Slope Efficiency

(dPo/dI

F

)

P

fiber

P

o

100

400

50

W

W

I

F

=12mA

I

F

=12mA

(Note 1)

(Note 2)

mW/A

I

F

=12mA

GHz

860

1

2.2

6

nm

nm

V

mA

A

30

nA

I

F

=12mA,

V

R

>1V

V

R

=5V

I

F

=12mA

I

F

=12mA

I

F

=12mA

I

F

=12mA

Bandwidth

(3dBel )

f

c

p

2

830

840

0.5

Peak Wavelength

Spectral Width

(FWHM)

Forward Voltage

(Fig.5)

Threshold Current

Monitor Current

Monitor Dark Current

Relative Intensity Noise

V

F

I

th

I

m

I

d

RIN

30

1.9

3.5

100

-130

dB/Hz

I

F

=12mA, f=1 GHz

Note 1:

Fiber: 50/125 Graded Index, NA=0.2 or 62.5/125 Graded Index, NA=0.275.

Note 2:

Complies with laser Class 1 when operated at max 12 mA; Class 3 above 12 mA.

脴4.7

脴1.5

0.6

Absolute Maximum Ratings

PARAMETER

SYMBOL

LIMIT

Storage Temperature

3.7

T

stg

Top

P

tot

I

F

I

FRM

V

R

T

sld

-55 to +125 C

0 to +70 C

35 mW

15 mA

25 mA

1.5 V

260 C

Operating Temperature

(derating: Fig.4)

14

Electrical Power Dissipation

(derating: Fig.4)

Continuous Forward Current

(f

10 kHz)

50%, f 1 MHz)

0.4

VCSEL

Cathode

MONITOR

Anode

Peak Forward Current

(duty cycle

MONITOR

Cathode

VCSEL

Anode

All dimensions in mm

VCSEL Reverse Voltage

Soldering Temperature

(2mm from the case for 10 sec)

2.5

5.47

CASE NOT CONNECTED

BOTTOM VIEW

Thermal Characteristics

PARAMETER

SYMBOL

MIN.

TYP.

MAX.

UNIT

TO-46 Package With Lens

Thermal Resistance - Infinite Heat Sink

Thermal Resistance - No Heat Sink

R

thjc

R

thja

d

/dT

j

P

Ith

500

800

0.06

0.7

0.6

C/W

C/W

nm/ C

dB

mA

Class 1 Laser Product

Temp. Coefficient -W

avelength

Optical Power - Variation 0 to 70 C

Threshold Current - Variation 0 to 70 C

13589.11 1999-04-01

Europe:

Tel

(46) 8 58 02 45 00

Fax

(46) 8 58 02 01 10

Tel

(44) 1291 436180

Fax

(44) 1291 436771

America:

Tel

1-800-96MITEL

Fax

(613) 592-6909

Asia:

Tel

(65) 293 5312

Fax

(65) 293 8527

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