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A370-10B

A370-Type Analog Uncooled Laser Module

Agere -> LSI Corporation 

A370-Type Analog

Uncooled Laser Module

Data Sheet

March 2001

Electro/Optical Characteristics (continued)

Analog Operation

The A370 Series Laser Module has the capability of being used in a wide variety of analog operations. These may

include several channels of pure video signals, or a mix of video signals with digital data channels riding on analog

carriers. It is difficult to prepare a single battery of testing conditions that will satisfy all applications. The following

table contains a set of testing conditions that Lucent believes will give a broad indication of the performance of the

A370 Series Laser Module. Please contact your local Field Application Engineer if different testing conditions and

parametric limits are required.

The distortion characteristics are measured using a two-tone test. The frequencies are 13 MHz and 19 MHz. The

second-order distortion components are measured at f1 + f2 = 32 MHz and f1 – f2 = 6 MHz. All third-order distor-

tion components are measured in the frequency range of 5 MHz—200 MHz, and they meet the required level. All

measurements are made with SC-SPC connectors on the laser module pigtails.

Table 3. Analog Characteristics

Parameter

Output Power*

Relative Intensity Noise

Modulation Bandwidth

Second-order Distortions

Third-order Distortions

RF Bandpass Flatness

Spurious Noise

Spurious Noise (carrier off)

Symbol

Test Conditions

Min

PO

CW, T = –40 °C to +85 °C

—

RIN

CW,

—

Freq. = 5 MHz to 300 MHz;

no fiber loss, T = –40 °C to +85 °C

BW

–3 dB,

1.0

T = –40 °C to +85 °C

—

T = 25 °C, OMI = 0.2;

—

Two-tone test: f1 = 13 MHz,

f2 = 19 MHz; 20 km of fiber,

(7 dB loss) plus connector loss,

f1 ± f2

—

T = 25 °C, OMI = 0.2;

—

Two-tone test: f1 = 13 MHz,

f2 = 19 MHz; 20 km of fiber

(7 dB loss), plus connector loss,

all peaks from 5 MHz—50 MHz

meet this level

BPF Peak to valley: 5 MHz to 200 MHz —

NSP

T = 25 °C, OMI = 0.2;

—

ref. to one-tone: 5 MHz to 50 MHz,

20 km of fiber, (7 dB loss) plus

connector loss

N'SP

T = 25 °C

—

* See Table 5 for more information.

† Premium performance.

Typ

1.0

–140

—

–48

–50†

–60

–60†

—

–58

–58†

–45

–45†

Max

—

–130

Unit

mW

dB/Hz

— GHz

–40 dBc

–45† dBc

–50 dBc

–50† dBc

1.0

dB

–54 dBc

–54† dBc

–37 dBc

–40† dBc

4

Lucent Technologies Inc.

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