Agilent Technologies 81642A Manual do Utilizador descarregar pdf (Página 25)

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Signal Conditioning

Agilent 8157xA High-Power Optical Attenuators (cont.)

8157xA 81578A-050 81578A-062

Connectivity Straight (81570A) / Straight (81576A) / Straight connector versatile interface

Angled (81571A) Angled (81577A)

connector versatile interface connector versatile interface

Fibre Type 9/125 µm SMF28 9/125 µm SMF 50/125 µm MMF 62.5/125 µm MMF

Wavelength Range 1200 – 1700 nm 1250 – 1650 nm 700 nm – 1400 nm

Attenuation Range 0 – 60 dB 0 – 60 dB

Resolution 0.001 dB 0.001 dB

Attenuation Setting Power Setting

Repeatability

±0.01 dB ±0.010 dB ±0.015 dB

±0.015 dB

19, 22

Accuracy (uncertainty)

1,3

±0.1 dB

4,5

±0.1 dB

4,5

N/A typ. ±0.15 dB (800 nm – 1350 nm)

±0.2 dB (at 850 nm ±15 nm, 1310 nm ±15 nm)

19,20,21,22

Settling Time (typical)

typ. 100 ms 100 ms 300 ms typ. 100 ms

Transition Speed (typical) 0.1 – 12 dB/s typ. 0.1 – 12 dB/s

Relative Power Meter Uncertainty

16,17

N/A ±0.03 dB ±200 pW

Attenuation Flatness

1,5,7,9

<±0.07 dB (typically ±0.05 dB) for 1520 nm < λ <1620 nm

typically ±0.10 dB for 1420 nm < λ <1640 nm

Spectral Ripple (typical)

±0.003 dB

Insertion Loss

3,5

Typically 0.7 dB Typically 0.9 dB (excluding connectors) <1.8 dB typ. 1.0 dB (NA = 0.1) typ. typ. 1.0 dB (NA = 0.1)

excluding connectors (typically 1.2 dB) Connectors Including

10,11

typ. 1.3 dB (NA = 0.2) 1.3 dB (NA = 0.2)

<1.6 dB (typically 1.0 dB) 2.0 dB (NA = 0.2)

19,22

2.0 dB (NA = 0.2)

19,22

including connectors

10,11

typ. 3.0 dB (NA = 0.27)

Insertation-Loss Flatness (typical)

1,12,5

±0.1 dB for 1420 nm < λ <1615nm

Polarization-Dependent Loss

3,10,12

<0.08 dBpp <0.10 dBpp (typically 0.05dBpp)

(typically 0.03dBpp)

Polarization Extinction Ratio N/A

Return Loss (typical) 45 dB (81570A) / 45 dB (81576A) typ. 27 dB

19,22,24

57 dB (81571A)

10,12

57 dB (81577A)

10,12

(at 1550 nm ±15 nm)

Maximum Input Power

+33 dBm +27 dBm

Shutter Isolation (typical) 100 dB typ. 100 dB

Dimensions (H x W x D) 75 mm x 32mm x335mm 75 mm x 64mm x335mm 75 mm x 32 mm x 335 mm

(2.8’’x1.3’’x13.2’’) (2.8’’x2.6’’x13.2’’) (2.8” x 1.3” x 13.2”)

Weight 0.9 kg

Recommended Recalibration Period 2 years

Operating Temperature 10°C – 45°C

Humidity Non-condensing

Warm-up Time 30 minutes

At constant temperature.

Output power >–40 dBm, input power <+27 dBm. For input power >+27 dBm

add typically ±0.01 dB.

Temperature within 23ºC ± 5ºC.

Input power <+30 dBm; λ = 1550 nm ± 15 nm; typical for 1250 nm < λ <1650 nm.

For unpolarized light (SMF versions), or polarized light with TE mode injected in the

slow axis (PMF version).

Stepsize <1 dB; for full range: typically 6 s.

Relative to reference at 0 dB attenuation.

Linewidth of source ≥100 MHz.

λ disp set to 1550 nm; attenuation ≤20 dB. For attenuation >20 dB: add typically 0.01 dB

(_[db] – 20) for 1520 nm < λ <1620 nm. and typically 0.02 dB (_[db] – 20) for 1420 nm

< λ <1640 nm.

For λ = 1550 nm ± 15 nm.

Add typically 0.1 dB for λ = 1310 nm ± 15 nm.

Measured with Agilent reference connectors.

Ordering information

For the most up-to-date information on Agilent 8157xA optical attenuators, please contact your Agilent Technologies sales representative or visit our web site at: www.agilent.com/comms/lightwave

Connector Interface

All modules require two connector interfaces, 81000xI series (physical contact).

Excluding connectors, measured using a broadband source.

Agilent Technologies assumes no responsibility for damages caused by scratched or

poorly cleaned connectors.

Wavelength and SOP constant; temperature constant and between 23ºC ±ºC; λ <1630 nm.

Input power ≤+27 dBm; for input power >+27 dBm add ±0.02 dB.

At constant operating conditions.

Effective spectral bandwidth of source >5 nm.

For mode launch conditions with NA = 0.2; for every DNA = 0.01 add typ. ±0.01 dB.

Temperature within 23°C ±5°C and unpolarized light.

At 850nm ±15 nm, 1310 nm ±15 nm.

Step size <1 dB, for full range: typ. 6 seconds.

The return loss is mainly limited by the return loss of the front panel connectors.

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