Datasheet D1861A040, D1861A023 Datasheet (AGERE)

D1861A 10 Gbits/s 1310 nm DML Module

ESD

PROTECTION

TEC

7654 321

–––++

RF

R

MATCH

45

Ω

R

TH

10 kΩ @ 25 °C

ISOLATOR

RF CONNECTOR

MPD

DFB

CHOKE

Description

The D1861A direct-modulated laser (DML) module is
a cost-effective solution for 10 Gbits/s digital trans­mission up to 50 km using traditional intracity SMF28
single-mode fiber links. The 1310 nm wavelength
eliminates the need for concern about dispersion
control over most installed intracity fiber plants. The
package contains a high-speed DFB laser chip, ther­moelectric cooler, thermistor, optical isolator, and a
rear-facet monitor photodiode, which allows for exter­nal optical power control.

Data Sheet

August 2000

Features

■

Direct-modulated 1310 nm laser module character­ized for use in 10 Gbits/s operations up to 50 km

■

Av erage optical output power, 4 mW min.

■

Temperature stabilized with internal thermoelectric
cooler (TEC), enabling operation within a wide
temperature range of –40 °C to +80 ° C

■

Hermetically sealed optics, isolator on TEC

■

GPO*

RF connector

■

Single-mode fiber pigtail

■

High relaxation frequency at low bias

Applications

■

SONET/SDH low-cost metro applications

■

High-speed data communications

■

DWDM equipment drop-side applications

*

GPO

is a trademark of Gilbert Engineering Co., Inc.

Figure 1. D1861A DML Electrical Schematic

Pin Information

Table 1. Pin Descriptions

Pin No. Description

1Thermistor
2Thermistor

3 Laser Cathode (–), dc Bias
4 MPD Anode, (Negative Bias MPD)
5 MPD Cathode
6 Thermoelectric Cooler (+)
7 Thermoelectric Cooler (–)

1. Laser anode is case ground mAp-p drive current.

2. A positive current into this pin cools the laser.

1-1157(F)

1

2

Data Sheet

D1861A 10 Gbits/s 1310 nm DML Module August 2000

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso­lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability. RF input shall be ac coupled. It is recommended that a series induc­tor of 100 µH be placed external to the device on Pin 3.

Parameter Symbol Condition Min Max Unit

Operating Temperature Range T

OP

Storage Case Temperature Range Tstg — –40 85 °C
Laser Forward Bias — TEC On — 150 mA
Pin 3, Max. Positive Voltage
Pin 3, Max. Positive Current
Reverse Voltage Photodiode V
TEC Current I

1. RF connector ac coupled.

1
1

V

R

I

R

RPD

TEC

— –40 80 °C

——1V
— — 200 mA
——20V
——1.7A

Electrical/Optical Characteristics

T able 2. Electrical and Optical Characteristics

Parameter S ymbol Condition Min Typ Max Unit

Average Optical Output Power P
Threshold Current (BOL) I

O

TH

Wavelength λ — 1290 — 1320 nm
Wavelength Tuning Coefficient ∆λ

T

External Efficiency η — 0.125 0.15 — W/A
ac Side-mode Suppression Ratio SMSR I
Chromatic Dispersion Penalty

——

(50 km, SMF28, 200 ps/nm)
Optical Isolation — — 32 — — dB
High-frequency Cutoff (3 dB) F
Low-frequency Cutoff (3 dB) F
RF Return Loss, 50 Ω

HIGH

LOW

IS

II

11

(0.1 GHz—8 GHz)
Rise/Fall Time, 10%—90% t
Thermoelectric Cooler Current I
Thermistor Resistance R

R/tF
TEC

TH

Thermistor Coef fic ient — — — –4.4 — %/°C
Monitor Photodiode Current I

1. 10 Gbits/s PRBS 223–1, ER = 8.2 dB, @ IOP, TOP = 25 °C, typical 50 mAp–p drive current.

2. Measurements made with 100 µH in series with pin 3 (laser cathode).

MPD

(Case Temperature, –40 °C to + 80 °C; Laser T emperature, 25 °C

unless otherwise noted.)

I

OP = ITH

+ 30 mA 4 — — mW

—2—30mA

— — 0.085 — nm/°C

35 — — dB
——1.0dB

14 — — GHz
——30kHz
10 — — dB

— — 50 ps

I
I

OP

OP
OP

OP

—

1

2
2

1

———1.3A
— 9.5 10 10.5 kΩ

I

OP

40 — 1500 µA

2

Agere Systems I nc.

Data Sheet
August 2000 D1861A 10 Gbits/s 1310 nm DML Module

Characteristic Curve

Figure 2. Filtered Optical Eye Pattern (0 km, Fourth

Order Bessel Filter, 8.2 dB ER, 20 ps/div)

Outline Diagram

Dimensions are in inches and (millimeters).

0.365
(9.45

9.09)

0.040
(1.19

0.84)

RF INPUT
LIMITED DETENT
GPO OR SMP
CONNECTOR

0.164 DIA

0.248
(6.45

6.12)

0.228
(5.97

5.61)

1.025

(26.21

25.86)

0.420

(10.85

10.49)

FIBER AND BEND LIMITER
MAINTAIN FIBER BEND RADIUS
GREATER THAN 1.5”

0.318
(8.26

7.90)

0.190
(5.00

4.65)

0.078
(2.16

1.80)

0.105 DIA
4 PLCS

0.250
(6.53

6.17)

0.350
(9.07

8.71)

LEADS

0.008” THICK x 0.030” WIDE

0.400” MIN. LENGTH
6 SPCS @ 0.100” (0.254)

PIN 1

0.212
(5.56

0.500

(12.88

1.04)

5.21)

0.215 ± 0.010
(5.50 ±0.30)

0.048
(1.40

0.600

(15.00)

12.52)

0.820

(20.80)

1.180

(30.00)

Agere Systems Inc.

1-1156(F)

3

Data Sheet

D1861A 10 Gbits/s 1310 nm DML Module August 2000

Laser Safety Information

Class IIIb Laser Product

FDA/CDRH Class IIIb laser product. All versions are Class IIIb laser products per CDRH, 21 CFR 1040 Laser
Safety requirements. All versions are Class 3B laser products per
fied with the FDA under an accession number to be determined.

This product complies with 21 CFR 1040.10 and 1040.11.
SMF28 single-mode fiber pigtail and connector
Wavelength = 1.3 µm
Maximum power = 30 mW

Because of size constraints, laser safety labeling is not affixed to the module but attached to the outside of the ship­ping carton.

Product is not shipped with power supply.

Caution: Use of controls, adjustments, and procedures other than those specified herein may result in

hazardous laser radiation exposure.

*

IEC

is a registered trademark of The International Electrotechnical Commission.

IEC

* 60825-1:1993. The device has been classi-

DANGER

INVISIBLE LASER RADIATION
IS EMITTED FROM THE END
OF FIBER OR CONNECTOR
Avoid direct exposure to beam

Do not view beam directly with
optical instruments

INVISIBLE LASER RADIATION EMITTED FROM END OF FIBER OR CONNECTOR

Avoid exposure to beam
Class 3B Laser Product IEC-60825M 1993 Max. Output: 30 mW Wavelength: 1.3 µm

4

Agere Systems I nc.

Data Sheet
August 2000 D1861A 10 Gbits/s 1310 nm DML Module

Ordering Information

Table 3. Ordering Information1

Device Code Description Connector Pigtail Comcode

D1861A023 10 Gbits/s DML,

FC/SPC

SMF-28

1310 nm

D1861A040 10 Gbits/s DML,

1310 nm

D1861A050 10 Gbits/s DML,

SC/UPC

Standard

LC

SMF-28

SMF-28

1310 nm

1. Other options available. For additional ordering information, please contact an Agere Systems account manager at Opto West, 1-800-362­3891 (for sales staff, please press option 2).

SMF-28

2.

is a trademark of Corning Incorporated.

2

(1 m min.) 108870015

2

(1 m min.) 108870023

2

(1 m min.) 108870031

Agere Systems Inc.

5

Data Sheet

D1861A 10 Gbits/s 1310 nm DML Module August 2000

For additional information, contact your Agere Systems Account Ma na ger or the following:
INTERNET: http://www.agere.com
E-MAIL: [e-mail]
N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286

ASIA PACIFIC: Agere Systems Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256
CHINA: Agere Systems (Shanghai) Co., Ltd., 33/F Jin Mao Tower, 88 Century Boulevard Pudong, Shanghai 200121 PRC
JAPAN: Agere Systems Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan
EUROPE: Data Requests: DATALINE: Tel. [phone], FAX [phone]

Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application.

Copyright © 2001 Agere Systems Inc.
All Rights Reserved

August 2000
DS00-273OPTO

1-800-372-2447, FAX [phone] (In CANADA: 1-800-553-2448, FAX [phone])
Tel. [phone], FA X (65) 777 7495
Tel. [phone], FAX [phone]
Tel. [phone], FAX [phone]

Technical Inquiries: OPTOELECTRONICS MARKETING: (44) 1344 865 900 (Ascot UK)