AGERE 1738UCA, 1738UBA, 1738UAA Datasheet

1738U-Type Small Form-Factor
Erbium-Doped Fiber Amplifier with Uncooled Pump

Preliminary Data Sheet

March 2001

Compact size and extremely low power consumption make
the 1738U-Type EDFA an ideal solution for single-channel,
preamplification applications in C-band.

Features

■

Economical, compact package:
90 mm x 70 mm x 12 mm

■

Extremely low power consumption: <875 mW

■

Single-channel amplification in C-band
(1528 nm—1562 nm)

■

Uncooled 980 nm pump laser module

■

Wide operating temperature range:
–5 °C to +70 °C

■

Optical input tap

■

Isolated input and output

■

Connectorized single-mode fiber pigtail

Applications

■

Single-channel links in:
— Metro systems
— Long-haul transport
— Switch matrix

Description

The 1738U-Type Uncooled Small Form-Factor
Erbium-Doped Fiber Amplifier (SFF EDF A) is
designed for single-channel amplification in C-band
applications. The device is manufactured in an eco­nomical SFF package and exhibits extremely low
power dissipation over a wide operating temperature
range.

Optimum performance and system stability are sup­ported through the use of optical isolation at the input
and output. Optical input and output functions are
achieved through single-mode fiber pigtails termi­nated with optical connectors. The EDFA incorpo­rates an optical input tap and monitor photodiode.

2

Agere Systems Inc.

1738U-Type Small Form-Factor Preliminary Data Sheet
Erbium-Doped Fiber Amplifier with Uncooled Pump March 2001

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.

Electrical/Optical Operational Characteristics

Parameter Symbol Min Max Unit

Operating Case Temperature Range T

OP

–5 70 °C
Storage Case Temperature Range Tstg –40 85 °C
Laser Forward Current I

F

— 500 mA
Laser Reverse Voltage V

R

—2.5V

Table 1. Optical/Electrical Characteristics

Parameter Symbol Conditions Min Max Unit

Wavelength Range λ — 1528 1562 nm
Optical Output Power P

OUT

P

IN

= –30 dBm to –8 dBm –5 — dBm

Optical Input Power P

IN

— –30 –8 dBm

Noise Figure NF P

IN

= –30 dBm

P

IN

= –20 dBm

P

IN

= –15 dBm

P

IN

= –8 dBm

—
—
—
—

5.5

5.7

6.8

8.5

dB
dB
dB
dB

Operating Laser Forward Current I

F,OP

——350mA

Operating Laser Forward Voltage V

F,OP

——2.5V

Power Consumption P

C

——875mW

ASE Noise Power at Optical Input Port P

ASE,I

PIN = –30 dBm,
P

OUT

= –5 dBm

— –20 dBm

Output Leakage Pump Power P

LEAK,O

PIN = –30 dBm,

P

OUT

= –5 dBm,

λ = 1562 nm

— –26 dBm

Reverse Isolation I

ISO

PIN = –30 dBm 25 — dB

Input Monitor Tap Responsivity R

TAP

— 0.032 0.063 A/W
Polarization Sensitivity PDG — — 0.5 dBp-p
Polarization Mode Dispersion PMD — — 0.5 ps
Optical Input Return Loss RL

I

—30—dB
Optical Output Return Loss RL

O

—30—dB