3

Supplementary

Performance

Specifications

Internal digital

modulation mode

270 Hz, 330 Hz, 1 kHz, 2 kHz

and free selection 200 Hz to 10 kHz.

All output signals are pulse shaped,

duty cycle 50%.

Internal coherence control for line-

width broadening.

Output attenuation

The output power of all source mod-

ules can be attenuated from 0 dB to

6 dB in steps of 0.1 dB.

Laser safety information

All laser sources listed above are

classified as Class 1M according to

IEC 60825 1 (2001). All laser sources

comply with 21 CFR 1040.10 except

for deviations pursuant to Laser

Notice No. 50, dated 2001-July-26.

Technical Specifications

Fabry-Perot source module specifications

(high-power modules, 13 dBm)

Specifications apply to the end of a 2 m long fiber cable (as specified under fiber

type) with Diamond® HMS-10/Agilent connectors attached. All specifications

are valid for an attenuation setting of 0.0 dB. All modules require straight output

connectors.

Agilent

81655A

Agilent

81656A

Agilent

81657A

Type

Fabry-Perot Laser

1310 nm

±15 nm

1550 nm

±15 nm

1310/1550 nm

± 15 nm

Fiber type

Standard single-mode 9/125 µm

Spectral bandwidth

< 5.5 nm

< 7.5 nm

< 5.5nm/7.5 nm

Output power

> +13 dBm (20 mW)

Short term

(15 minutes)

< ± 0.005 dB

Typical < ±0.003 dB with coherence control active

Long term (24 hours)

Typical ± 0.03 dB

To back reflection

(RL ≥ 14 dB)

Typical ± 0.003 dB

Dimensions

(H x W x D)

75 mm x 32 mm x 335 mm (2.8” x 1.3” x 13.2”)

Weight

0.5 kg

Recalibration period

2 years

Operating temperature

0 ºC to 45 ºC

Humidity

Non-condensing

Warm-up time

Table 2. Technical specifications for Fabry-Perot source modules (high-power

modules, 13 dBm)

1. Center wavelength is shown on display

2. RMS: root mean square

3. Warm-up time 20 min, if previously stored at the same temperature.

4. Controlled environment (∆T = ± 1 °C)

INVISIBLE LASER RADIATION

DO NOT VIEW DIRECTLY WITH

OPTICAL INSTRUMENTS

CLASS 1M LASER PRODUCT

(IEC 60825-1 / 2001)

Figure 2. Laser classification label for Class 1M