Data Sheet

10 Gbits/s Lithium Niobate Electro-Optic Modulator

May 2001

2

2

Agere Systems Inc.

Description

The 10 Gbits/s Electro-Optic Modulator is designed for

long-wavelength, single-mode external amplitude mod-

ulation applications. It uses an integrated Mach-

Zehnder configuration to convert single polarization

CW light from a semiconductor (DFB) laser into a time-

varying optical output signal. Agere Systems Inc. also

offers a 10 mW CW laser with polarization-maintaining

fiber (D2525P) to use as a source for the modulator.

The Ti-diffusion process is a standard feature on all

modulator devices. The 2623N, 2623Y, and 2623CS

are single-drive, 10 Gbits/s modulators; the 2623CSA

is a single-drive, 10 Gbits/s modulator with an attenuat-

ing section. Variable attenuation to >19 dB is achieved

through a dc bias voltage.

the environment. Novel processing techniques now

make it possible to achieve 20-year operation with little

drift in the dc bias point. The modulator is tested to, and

meets the intent of TR-NWT-00468.

Other standard features include PANDA-type polariza-

tion-maintaining fiber (PMF) for the optical input (all

codes) and output (2623N, 2623Y, and 2623C) fiber

with FC-type connectors that are keyed to the axis of

polarization. Custom designs are available.

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-

lute 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.

Parameter

Symbol

Min

Max

Unit

Storage Temperature

–40

85

°C

Optical Input Power @ 1.5

µm

—

30

mW

RF Voltage (peak to peak)

—

10

V

dc Voltage (RF input)

–20

20

V

dc Voltage (Attenuator input)

–25

25

V

Operating Temperature

070

°C