光スペクトラムアナライザー
OSA20

業界史上最も高速 / 高精度。
12 インチタッチスクリーン型ディスプレイ搭載。
ラボ / 製造用ベンチトップ式光スペクトラムアナライザー。（旧 Yenista Optics製）

特長

Spectral Range	1250-1700 nm / 239.834-176.349 THz
Span Range	0.5 nm to full range (450 nm)
Linearity ^*1	±6 pm over 1500-1640 nm, ±20 pm over full range / 2.5 GHz @ 1550 nm
Accuracy a Repeatability	±10 pm over 1500-1640 nm, ±25 pm over full range / 2.5 GHz @ 1550 nm ±2 pm / 0.25 GHz @ 1550 nm
Sampling Resolution	2 pm / 0.25 GHz @ 1550 nm
Sampling Points	251 (span of 0.5 nm) to 225,001 (span of 450 nm)
Reference	Built-in ELED (safety class 1) + Acetylene cell (user calibration by patch cord)
Resolution Bandwidth ^{2, 3, *4}	20 pm native, adjustable over 50.2000 pm with 1 pm step

Dynamic Range (ORR) ^*5	≥ 30 dB (> 35 dB typ.) beyond ±50 pm from peak. ≥ 50 dB (> 55 dB typ.) beyond ±100 pm from peak. ≥ 60 dB (> 63 dB typ.) beyond ±200 pm from peak
Stray Light Suppression Ratio ^*6	≥ 73 dB
Input Power per Channel	≤ 20 dBm
Total Safe Power	≤ 25 dBm
single scan	High (0.5 nm/s): < .76 dBm (.78 dBm typ.)

Level Sensitivity g with averaging (Avg Nb of scans) ^*8	High (0.5 nm/s): .80 dBm (Avg 3), .85 dBm (Avg 30), .90 dBm (Avg 380) . 75 dBm (2 nm/s): .80 dBm (Avg 7), .85 dBm (Avg 70), .90 dBm (Avg 800)
Absolute Level Accuracy ^{1, 9}	±0.4 dB at 1310 nm and 1550 nm
Level Linearity j	±0.07 dB over the full range (input level .50 to +3 dBm)
Level/Wavelength Flatness ^*11	±0.15 dB over 1500-1640 nm, ±0.25 dB over 1260-1680 nm
Level Sampling	±0.01 dB over .60 to +20 dBm
Sensitivity ^*7	-55 dBm at 2000 nm/s to .75 dBm at 2 nm/s

Calibration Output Connector of Input and Output	Wavelength reference (see above) FC/APC or FC/PC or SC/APC or SC/PC
Return Loss	> 38 dB ( > 42 dB typ.) at 1310 nm and at 1550 nm (APC connector)

Notes

*1

After user calibration performed after 1 hour warm-up time.
*2

Native 17-22 pm over 1500-1620 nm (except in –55 dBm sensitivity), 17-24 pm over 1250-1700 nm.
*3

Adjustable resolution bandwidth is calculated from the native bandwidth.
*4

Adjustable over 6-400 GHz with 0.1 GHz step on the abscissa in THz.
*5

HeNe laser at 1523 nm with ±2 nm span.
*6

Laser at 1523 nm with ±50 nm span, excluding ±2 nm around peak.
*7

Noise level of 99 % of all data points over 1520-1620 nm.
*8

Typical values.
*9

Over 18-28°C all sensitivity settings except ±0.6 dB in –55 dBm and Burst sensitivities.
*10

Measured @ 1310 nm & 1500 nm, except ±0.3 dB in –55 dBm and Burst sensitivities.
*11

Except ±0.35 dB in –55 dBm and Burst sensitivities, except for water absorption lines, over 18-28°C all sensitivity settings.
*12

Sweep cycle / 100 nm at –60 dBm sensitivity at center wavelength of 1475 nm.

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