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NEC'S EA MODULATOR AND

WAVELENGTH MONITOR INTEGRATED

InGaAsP MQW DFB LASER DIODE

MODULE FOR 2.5 Gb/s ULTRALONG-REACH 240,

360, 600 km DWDM APPLICATIONS

FEATURES

•

INTEGRATED ELECTROABSORPTION MODULATOR

•

WAVELENGTH MONITOR FUNCTION

(Etalon

lter, Wavelength monitor PD)

•

VERY LOW DISPERSION PENALTY

NX8567SAS Series - over 240 km (4320 ps/nm)

NX8567SAM Series - over 360 km (6480 ps/nm)

NX8567SA Series - over 600 km (10800 ps/nm)

•

LOW MODULATION VOLTAGE

•

AVAILABLE FOR DWDM WAVELENGHT BASED ON

ITU-T RECOMMENDATION (50 GHz grid, refer to

ordering information)

NX8567SA

Series

DESCRIPTION

NEC's NX8567SA Series is an Electro-Absorption (EA) modu-

lator and wavelength monitor integrated, 1 550 nm Multiple

Quantum Well (MQW) structured Distributed Feed-Back (DFB)

laser diode module. The module is capable of 2.5 Gb/s ap-

plications of over 240 km, 360 km, 600 km ultralong-reach and

available for Dense Wavelength Division Multiplexing (DWDM)

wavelengths based on ITU-T recommendations, enabling a

wide range of applications

ELECTRO-OPTICAL CHARACTERISTICS

= Tset, T

= -5 to +70°C, unless otherwise speciÞed)

PART NUMBER

SYMBOLS

SET

center

mod

FLD

PARAMETERS AND CONDITIONS

Laser Set Temperature

Operating Current

Modulation Center Voltage

Modulation Voltage

Forward Voltage of LD, I

FLD

= I

Threshold Current

FLD

= I

OP,

Under modulation

Optical Output Power from Fiber,

(NX8567SAM/SA Series)

FLD

= I

OP,

Under modulation

(NX8567SAS Series)

SMSR

Peak Emission Wavelength, I

FLD

= I

, V

= 0 V

Side Mode Suppression Ratio, I

FLD

= I

, V

= 0 V

Extinction Ratio, I

FLD

= I

, Under modulation

Rise Time, I

FLD

= I

, 20-80%, Under modulation

Rise Time, I

FLD

= I

, 80-20%, Under modulation

dBm

1528

–

ITU-T

–

1564

–

125

UNITS

°C

MIN

-2.0

–

-5

–

-2

NX8567SA SERIES

TYP

MAX

-0.5

2.0

–

Notes:

1. Tset is a certain point between 20 and 35C for ITU-T grid wavelength

2. 2.48832 Gb/s, PRBS 223 -1, V

= V

center

1/2 Vmod, I

FLD

= I

, TLD = Tset, NEC Test System

center

: a certain point between -2.0 and -0.5 V

mod

: a certain point 3 V or below

: a certain point between 50 and 80 mA

3. Available for DWDM wavelenght based on ITU-T recommendation (100 GHz grid). Please refer to ORDERING INFORMATION.

4. BER = 10

-10,

NX8567SAS: 240 km (4320 ps/nm)

BER = 10

-10,

NX8567SAM: 360 km (6480 ps/nm)

BER = 10

-10,

NX8567SA: 600 km (10800 ps/nm)

California Eastern Laboratories

NX8567SA SERIES

ELECTRO-OPTICAL CHARACTERISTICS

= Tset, T

= -5 to +70°C, Unless otherwise speciÞed)

PART NUMBER

SYMBOLS

PARAMETERS AND CONDITIONS

Dispension Penalty, I

FLD

= I

, SMF Under modulation

2,4

UNITS

MIN

–

NX8567SA SERIES

TYP

–

MAX

Isolation

Input Return Loss

FLD

= I

, V

= -1 V, 50

Ω

130 MHz to 2 GHz

FLD

= I

, V

= -1 V, 50

Ω

2 GHz to 2.5 GHz

–

-8

-5

–

Notes:

1. Tset is a certain point between 20 and 35C for ITU-T grid wavelength

2. 2.48832 Gb/s, PRBS 223 -1, V

= V

center

1/2 Vmod, I

FLD

= I

, TLD = Tset, NEC Test System

center

: a certain point between -2.0 and -0.5 V

mod

: a certain point 3 V or below

: a certain point between 50 and 80 mA

3. Available for DWDM wavelenght based on ITU-T recommendation (100 GHz grid). Please refer to ORDERING INFORMATION.

4. BER = 10

-10,

NX8567SAS: 240 km(4320 ps/nm)

BER = 10

-10,

NX8567SAM: 360 km (6480 ps/nm)

BER = 10

-10,

NX8567SA: 600 km (10800 ps/nm)

ELECTRO-OPTICAL CHARACTERISTICS

(Applicable to Monitor PD, T

= Tset, T

= -5 to +70°C, BOL)

SYMBOLS

(Pf)

(λp)

(λ)

|λ

-λ

ηλ

Discrimination Slope

, V

RPD

= 5 V, I

FLD

= I

, Locking point

Dark Current, V

RPD

= 5 V, V

= 0 V

Terminal Capacitance, V

RPD

= 5 V, f = 1 MHz

Tracking Error, I

(Pf) = const.

Note:

1. Operating region, Discrimination slope, Slope assignment

(λ)

@100%

: I

@75%

(λ

)

: I

@25%

@0%

Negative Slope

(nm)

Operation region

Locking point

(λ

)

: I

@25%

@0%

Positive Slope

(nm)

PARAMETERS AND CONDITIONS

Monitor Current (P

Monitor), V

RPD

= 5 V, I

FLD

= I

Monitor Current (λp Monitor), V

RPD

= 5 V, I

FLD

= I

, Locking point

Operation Region

UNITS

µA

µA/pm

MIN

0.24

–

TYP

–

MAX

200

100

–

0.5

– I

–

[

A/pm]

(λ)

@100%

: I

@75%

Operation region

Locking point

2. Tracking error:

(mW)

= T

set

, T

= 25ûC

= T

set

, T

= –20 to +70ûC

= 10 log

[dB]

NX8567SA SERIES

ELECTRO-OPTICAL CHARACTERISTICS

(Applicable to Thermistor and TEC, T

= -5 to +70°C)

PART NUMBER

SYMBOLS

PARAMETERS AND CONDITIONS

Thermistor Resistance, T

= 25°C

B Constant

Cooler Current, T

= T

set

Cooler Voltage, T

= T

set

kΩ

UNITS

9.5

3350

MIN

NX8567SA SERIES

TYP

10.0

3450

MAX

10.5

3550

1.2

2.4

ABSOLUTE MAXIMUM RATINGS

SYMBOLS

FLD

RLD

FPD

RPD

STG

SLD

PARAMETERS

Optical Output Power from Fiber

Forward Current of LD

Reverse Voltage of LD

Forward Voltage of Modulator

Reverse Voltage of Modulator

Forward Current of PD

Reverse Voltage of PD

Cooler Current

Cooler Voltage

Operating Case Temperature

Storage Temperature

Lead Soldering Temp. (3 s)

UNITS

°C

RATINGS

150

2.0

1.5

2.5

-5 to +70

-40 to +85

350

Note:

1. Operation in excess of any one of these parameters may result

in permanent damage.

NX8567SA SERIES

ORDERING INFORMATION

NX8567SA

CC : SC-UPC connector (standard)

BC : FC-UPC connector (option)

Wavelength code : Refer to

Table A

Without : 600 km (10800 ps/nm)

: 360 km (6480 ps/nm)

: 240 km (4320 ps/nm)

TABLE A: DWDM wavelengths based on ITU-T recommendations (@ TLD = Tset)

Wavelength Code

287

291

295

299

303

307

311

315

318

322

326

330

334

338

342

346

350

354

358

362

366

370

373

377

381

385

389

393

397

401

405

409

413

417

421

425

429

433

437

441

445

449

453

ITU-T Wavelength

(nm)

1528.773

1529.163

1529.553

1530.334

1530.725

1531.116

1531.507

1531.898

1532.290

1532.681

1533.073

1533.465

1533.073

1534.250

1534.643

1535.036

1535.429

1535.822

1536.216

1536.643

1537.003

1537.397

1537.792

1538.186

1538.581

1538.976

1539.371

1539.766

1540.162

1540.557

1540.953

1541.349

1541.746

1542.142

1542.539

1542.936

1543.333

1543.730

1544.128

1544.526

1544.924

1545.322

Frequency

(THz)

196.10

196.05

196.00

195.95

195.90

195.85

195.80

195.75

195.70

195.65

195.60

195.55

195.50

195.45

195.40

195.35

195.30

195.25

195.20

195.15

195.10

195.05

195.00

194.95

194.90

194.85

194.80

194.75

194.70

194.65

194.60

194.55

194.50

194.45

194.40

194.35

194.30

194.25

194.20

194.15

194.10

194.05

194.00

Wavelength Code

457

461

465

469

473

477

485

489

493

497

501

505

509

513

517

521

525

529

533

537

541

545

549

553

557

561

565

569

573

577

581

585

589

593

597

602

606

610

614

618

622

626

630

ITU-T Wavelength

(nm)

1545.720

1546.119

1546.518

1546.917

1547.316

1547.715

1548.515

1548.915

1549.315

1549.715

1550.116

1550.517

1550.918

1551.319

1551.721

1552.122

1552.524

1552.926

1553.329

1553.731

1554.134

1554.537

1554.940

1555.343

1555.747

1556.151

1556.555

1556.959

1557.363

1557.768

1558.173

1558.578

1558.983

1559.389

1559.794

1560.200

1560.606

1561.013

1561.419

1561.826

1562.233

1562.640

1563.047

Frequency

(THz)

193.95

193.90

193.85

193.80

193.70

193.60

193.55

193.50

193.45

193.40

193.35

193.30

193.25

193.20

193.15

193.10

193.05

193.00

192.95

192.90

192.85

192.80

192.75

192.70

192.65

192.60

192.55

192.50

192.45

192.40

192.30

192.25

192.20

192.15

192.10

192.05

192.00

191.95

191.90

191.85

191.80

Note:

monitor slope: Channel frequency for 191.80 THz + 2n × 0.05 THz is assigned on negative slope.

Channel frequency for 191.80 THz + (2n + 1) × 0.05 THz is assigned on positive slope.

n is a positive integer including zero.

NX8567SA SERIES

OUTLINE DIMENSIONS

(Units in mm)

15.24

2.54

6.0 MAX.

10 MIN.

4 –

2.67

22 MAX.

0.9

8.0

5.4

TOP VIEW

–

Cooler

PD (λ

)

PD (P

)

MOD

1.25

Thermistor

8.89±0.13

12.7±0.15

Fiber

Nose

#14

20.83±0.13

26.04±0.13

No.

PIN CONNECTIONS

Function

Thermistor

LD DC Bias (+)

PD (P

) Anode (–)

PD (λ

) and

PD (P

) Cathode (+)

Cooler (+)

Cooler (–)

No.

Function

GND

PD (λ

) Anode (–)

LD/MOD GND

Signal Input (MOD),

Ω

RF Input

LD/MOD GND

GND

Optical Fiber (SMF)

Length : 900 MIN.

0.75

8.0

29.97±0.25

OPTICAL FIBER CHARACTERISTICS

PARAMETER

Mode Field Diameter

Cladding Diameter

Tight Buffer Diameter

Cut-off Wavelenght

Attenuation 1525 to 1575 nm

Minimum Fiber Bending Radius

Fiber Length

Flammability

UNITS

µm

dB/km

SPECIFICATION

9.3±0.5

125±1

900±100

< 1270

< 0.3

1225 MIN

UL1581VW-1

35±2 mm

8.99±0.5 mm

-CC : SC-UPC connector

-BC : FC-UPC connector

Fiber Length: 900 mm MIN.

Life Support Applications

These NEC products are not intended for use in life support devices, appliances, or systems where the malfunction of these products can reasonably be expected

to result in personal injury. The customers of CEL using or selling these products for use in such applications do so at their own risk and agree to fully indemnify

CEL for all damages resulting from such improper use or sale.

07/29/2003