Edition 1.1
July 2004

FEATURES

· Direct Modulation Laser for WDM systems
· Optimized for Long Distance Transmission (Dispersion 1800ps/nm)
· Peak wavelength 1527.99 to 1563.05nm (C-band: 191.8 to 196.2THz,

100GHz spacing)

· Output Power: 2mW
· 14-pin Butterfly type package
· Built-in Optical Isolator, Power Monitor PIN-PD, Thermistor,

and Cooler

· Single Mode Fiber

APPLICATIONS

This laser is intended for the application of 2.5 Gb/s
long haul Dense Wavelength Division Multiplexing (DWDM).
Transmission spans of 100km (1800ps/nm) are possible.

DESCRIPTION

The laser is capable of 2.5 Gb/s transmission. It is packaged in a "butterfly" type module.
The module employs a highly stable optical coupling system, coupling the laser output through a
built-in optical isolator into a single mode fiber pigtail. The module also includes a monitor photodiode,
a thermoelectric cooler (TEC), and thermistor. This device is designed for use in DWDM direct
modulation transmission systems. Selected wavelengths specified to the ITU-T grid are available.

Parameter

LD Forward Current

Cooler Voltage

Symbol

Condition

PD Reverse Voltage

VDR

150

2.5

Ratings

PD Forward Current

IPF

Optical Output Power

LD Reverse Voltage

Unit

ABSOLUTE MAXIMUM RATINGS (Tc=25°C, unless otherwise specified)

Cooler Current

260

°C

Lead Soldering Time

Tsold

10 sec

ATC Operation

Thermistor Temperature

Tth

+70

°C

Environmental Operating Humidity

Environmental Storage Humidity

Xop

Storage Temperature

Tstg

+85

Cooling

Heating

1.4

Cooling

Heating

°C

Operating Case Temperature

Top

+70

-20

-40

-2.5

-0.9

-20

°C

Xst

Top<30

°C

Tstg<30

°C

Min.

Max.

FLD5F15CX-E

1,550nm DWDM Direct
Modulation DFB Laser

FLD5F15CX-E

Parameter

Threshold Power

Symbol

Pth

Slope Efficiency

Series Resistance

Optical Output Power

OPTICAL AND ELECTRICAL CHARACTERISTICS (TL=Tset, Tc=25°C, BOL, unless otherwise specified)

Laser Set Temperature

Tset

Tracking Error (Note 1)

IF=Ith, CW

Test Conditions

CW, Pf=2mW

Pf=2mW, Tc=-20 to 70°C,

Im-APC

µW

mW/mA

Unit

°C

Min.

Limits

150

2.0

0.03

+0.5

-0.5

Peak Wavelength

Wavelength Drift (after 20 yrs)

Wavelength Stabilty with
Case Temperature

Note (2)

Note (4)

Threshold Current

Ith

Forward Voltage

VFDC

CW, IF=30 mA, pin 12, 13

CW, pin 12, 13

0.04

Monitor Current

CW, Pf=2mW, VDR=5V

2.0

0.25

Photodiode Dark Current

VDR=5V

100

Photodiode Capacitance

VDR=5V, f=1 MHz

Photodiode Cutoff Frequency

fcm

VDR=5V, 50 load

MHz

100

Side Mode Suppression

Note (2)

/dTc

Tc=-20 to 70

°C

pm/

°C

-1.0

Spectral Width (-20dB)

Note (2)

0.5

+100

+1.0

-100

Cutoff Frequency

Pf=2mW, -3 dB

GHz

3.5

Relative Intensity Noise

RIN

f=2.5 GHz

Pf=2mW, ORL=24 dB

dB/Hz

-140

Dispersion Penalty

Note (3)

2.0

Kink

Kns

up to 2.4mW

No Kink

f=50 MHz ~ 2 GHz

RF Return Loss

S11

f=2 GHz ~ 3 GHz

f=3 GHz ~ 5 GHz

Optical Isolation

Tc=-20 to 70

°C

1.6

1.75

Max.

Typ.

Note 1. TE=10*log{pf(Tcase)/Pf(Tc=25

°C)}(dB)

Note 2. 2.5 Gb/s NRZ, Ppeak=2mW, Rext=8.2dB, PRBS=2

-1,

Note 3. Bit rate=2.48832 Gb/s, PRBS=2

-1, Dispersion=1,800 ps/nm, Ppeak=2mW,

Rext=8.2dB

Decision point: Center of Back-to-Back at 10

-9

, No Floor,

Receiver: Eudyna Standard Receiver

Note 4. The selected wavelengths available are listed in Fig. 8

Rise/Fall Time

Tr, Tf

20% to 80%

nsec

0.125

1,550nm DWDM Direct
Modulation DFB Laser

FLD5F15CX-E

Parameter

Cooler Voltage

Cooler Power

Thermistor Resistance

Thermistor B Constant

Symbol

Rtr

TL=Tset,

Pf=2mW, Tc=70°C

TL=25

°C

Test Conditions

Unit

TEC AND THERMISTOR CHARACTERISTICS

Limit

1.0

2.4

10.5

Max.

Typ.

9.5

10.0

3,630

3,270

3,450

Min.

(TL=Tset, Tc=25°C, BOL, unless otherwise specified)

Cooler Current

Fig. 1 Forward Current vs Output Power

Forward Current, If (mA)

Output Power, Pf (mW)

Fig. 2 Frequency Response

Frequency (GHz)

Relative Output (dB)

-3

-6

-9

-12

Pf=2mW

TL=25°C

1,550nm DWDM Direct
Modulation DFB Laser

FLD5F15CX-E

Fig. 4 Cooler Voltage -Current

Case Temperature (

°C)

Cooler Voltage (V)

Cooler Current (A)

-1.0

3.0

2.0

0.0

1.0

-1.0

3.0

2.0

0.0

1.0

Fig. 3 RF Return Loss

Frequency (GHz)

Return Loss (dB)

-10

-20

-30

Fig. 5 Spectrum

Wavelength

(nm)

Relative Intensity (dB)

-10

-40

-50

-60

-20

-30

1540

1550

1560

Fig. 6 Temperature Dependance of

Wavelength (ACC Operation)

Laser Temperature, TL (°C)

Wavelength (nm)

1550

1551

1552

1553

1554

1,550nm DWDM Direct
Modulation DFB Laser

FLD5F15CX-E

Fig. 7 Transmission Characteristics

Average Input Power (dBm)

Bit Error Rate

-12

-10

-8

-6

-4

-37

-33

-29

-25

2.5Gb/s, NRZ,
PRBS=2

-1,

Pave=0dBm,
Rext

9dB,

Dispersion penalty
2dB@10

-10

Fig. 8 Wavelength Table

Part Number

FLD5F15CX-E9620

-E9610
-E9600
-E9590
-E9580
-E9570
-E9560
-E9550
-E9540
-E9530
-E9520
-E9510
-E9500
-E9490
-E9480
-E9470

1527.99
1528.77
1529.55
1530.33
1531.12
1531.90
1532.68
1533.47
1534.25
1535.04
1535.82
1536.61
1537.40
1538.19
1538.98
1539.77
1540.56
1541.35
1542.14
1542.94
1543.73

±0.1

Wavelength (nm)

(TL=Tset)

(in vacuum)

Tolerance (nm)

-E9460
-E9450
-E9440
-E9430
-E9420

1544.53
1545.32
1546.12

±0.1

-E9410
-E9400
-E9390
-E9380
-E9370
-E9360
-E9350
-E9340
-E9330
-E9320
-E9310
-E9300
-E9290
-E9280
-E9270
-E9260
-E9250
-E9240
-E9230
-E9220
-E9210
-E9200
-E9190
-E9180

1546.92
1547.72
1548.51
1549.32
1550.12
1550.92
1551.72
1552.52
1553.33
1554.13
1554.94
1555.75
1556.55
1557.36
1558.17
1558.98
1559.79
1560.61
1561.42
1562.23
1563.05

±0.1

Back to Back
After Transmission
(1800ps/nm)

1,550nm DWDM Direct
Modulation DFB Laser

FLD5F15CX-E

PIN 7

8.25

0.5

5.25

0.5

20.83

±0.25

22.0

±0.25

26.04

±0.25

PIN 8

4-Ø2.67

PIN 1

29.97

±0.25

25.0

±0.5

PIN 14

14-0.5

5.4

±0.5

15.24

±0.25

17.24

±0.25

2.54

Grounded Type

1. Thermistor
2. Thermistor
3. Laser DC Bias (-)
4. Monitor (Anode)
5. Monitor (Cathode)
6. Thermoelectric Cooler (+)
7. Thermoelectric Cooler (-)
8. Case Ground
9. Case Ground
10. N.C.
11. Case Ground
12. Laser Modulation (-)
13. Case Ground
14. N.C.

PIN #

FUNCTION

15.2

0.3

5.08

0.15

0.9

0.1

12.7

0.25

8.89

0.15

5.2

0.25

4.15

±0.25

5.47

±0.2

1.70

0.5

8.17

±0.25

1.70

±0.15

0.5

±0.2

5.41

±0.25

14-0.1

±0.05

CONNECTOR

TEC

"CX" PACKAGE

UNIT: mm

1,550nm DWDM Direct
Modulation DFB Laser

Eudyna Devices Inc. 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:

Eudyna Devices USA Inc.

2355 Zanker Rd.
San Jose, CA 95131-1138, U.S.A.
TEL: (408) 232-9500
FAX: (408) 428-9111

www.us.eudyna.com

Eudyna Devices Europe Ltd.

Network House
Norreys Drive
Maidenhead, Berkshire SL6 4FJ
United Kingdom
TEL: +44 (0) 1628 504800
FAX: +44 (0) 1628 504888

Eudyna Devices Asia Pte Ltd.

Hong Kong Branch

Rm. 1101, Ocean Centre, 5 Canton Rd.
Tsim Sha Tsui, Kowloon, Hong Kong
TEL: +852-2377-0227
FAX: +852-2377-3921

Eudyna Devices Inc.

Sales Division
1, Kanai-cho, Sakae-ku
Yokohama, 244-0845, Japan
TEL: +81-45-853-8156
FAX: +81-45-853-8170

Eudyna Devices Inc. reserves the right to change products and specifications
without notice. The information does not convey any license under rights of
Eudyna Devices Inc. or others.

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