13

(O/O mode)

Specifications for optical to optical measurements at 1550 nm

N4373C system with network analyzer

E8361C/A -014

Specifications are valid under the stated measurement conditions.

At optical input 1 (“+7 dBm max”). At optical input 2 (“+17 dBm max”), specifications are typically the same for 10 dB

higher incident average and modulated optical power.

For wavelength:

(1550 ±20) nm

(option -101,102)

System performance

0.05 GHz to

0.2 GHz

0.2 GHz to

0.7 GHz

0.7 GHz to

20 GHz

20 GHz to

50 GHz

50 GHz to

65 GHz

Relative

frequency response

DUT response

≥ -3 dBe

±0.3 dBe typ.

(±0.15 dBo)

±0.3 dBe

(±0.15 dBo)

±0.3 dBe

(±0.15 dBo)

±0.4 dBe

(±0.2 dBo)

±0.6 dBe

(±0.3 dBo)

≥ -13 dBe

( ≥-6.5 dBo)

(typical)

±0.2 dBe

(±0.1 dBo).

±0.2 dBe

(±0.1 dBo)

±0.2 dBe

(±0.1 dBo)

±0.6 dBe

(±0.3 dBo)

±1.0 dBe

(±0.5 dBo)

≥ -23 dBe

( ≥-11.5 dBo)

(typical)

±0.2 dBe

(±0.1 dBo).

±0.2 dBe

(±0.1 dBo)

±0.3 dBe

(±0.15 dBo)

±0.7 dBe

(±0.35 dBo)

±1.3 dBe

(±0.65 dBo)

Absolute

frequency response

DUT response

≥ -3 dBe

±0.4 dBe typ.

(±0.2 dBo)

±0.4 dBe

(±0.2 dBo)

±0.4 dBe

(±0.2 dBo)

±0.7 dBe

(±0.35 dBo)

±0.9 dBe

(±0.45 dBe)

Frequency response

DUT response

≥ -3 dBe

±0.02 dBe

±0.02 dBe

±0.02 dBe

±0.1 dBe

±0.2 dBe

≥ -13 dBe

( ≥-6.5 dBo)

±0.02 dBe

±0.02 dBe

±0.02 dBe

±0.3 dBe

±0.5 dBe

≥ -23 dBe

( ≥-11.5 dBo)

±0.02 dBe

±0.02 dBe

±0.1 dBe

±1.0 dBe

±2.0 dBe

Minimum measurable frequency

-55 dBe typ.

(-27.5 dBo)

-42 dBe

(-21 dBo)

-42 dBe

(-21 dBo)

-42 dBe

(-21 dBo)

-36 dBe

(-18 dBo )

Phase uncertainty

DUT response

(≥-1.5 dBo)

±3.5°

±3.0°

±2.2°

±2.6°

±3.0°

≥ -13 dBe

(≥-6.5 dBo)

±5.5°

±3.5°

±2.2°

±3.0°

±3.5°

Group delay uncertainty

Derived from phase uncertainty, see section

“Group delay uncertainty”.

Example: ±2.0° → ±8 ps (1 GHz aperture)

[f1]

IFBW = 10 Hz.

[f2]

For +5 dBm average output power from LCA optical output.

[f3]

Except phase wrap aliasing (example: a DUT group delay of 5 ns (1 m cable length) requires a frequency step size of ≤ 0.2 GHz to avoid phase wraps).

[f4]

For DUT response max. +6 dBe (+3 dBo ) gain.

[f5]

After CW responsivity and user calibration with external source.

[f6]

Requires option -100 or -102.

[f7]

Average value over frequency range.