Yenista’s OSA20 is the most practical, high performance Optical Spectrum Analyzer on the market today. It is the fastest diffraction-grating based instrument operating from 1250 to 1700 nm. Designed around Yenista’s renowned filter technology, the OSA20 provides a fast, accurate, high dynamic range scan, eliminating compromises of conventional instruments. It is also the first instrument of its type to incorporate a touch sensitive display with multi-touch gesture control.

The OSA20 is the fastest optical spectrum analyzer of its kind with a maximum sweep speed of 2000 nm/s. It uses a fixed monochromator bandwidth of 20 pm and a fixed sampling resolution of 2 pm for all scans. This means every measurement is taken at the highest resolution and the highest accuracy. Sweep speed is determined solely by the choice of the sensitivity level: -55 dBm at 2000 nm/s down to -90 dBm by averaging over 380 scans with HIGH at 0.5 nm/s.

The OSA20’s monochromator utilizes Yenista’s renowned filter technology. The scanning filter has a 20 pm bandwidth, steep edges and low stray light. Power is integrated over 2 pm steps resulting in 225,001 data points for a 450 nm span. This allows for DWDM channel analysis down to 6.25 GHz spacing. The instrument has a high wavelength accuracy over the full wavelength range with ±10 pm specified over 1500-1640 nm.

The OSA20 is operated through its 12 inch capacitive touch screen with multi-touch gesture control, an industry first. This allows very fast navigation, scrolling and zooming in an intuitive manner. Keyboard and mouse control are also available through the USB interfaces.

The OSA20 has one general operation mode and seven application oriented analysis modes:

 OSA: Optical Spectrum Analyzer (general)
 WDM: Wavelength Division Multiplexing
 OFA: Optical Fiber Amplifier
 SML: Single Mode Laser
 MML: Multimode Laser
 BBS: Broadband Source
 RLT: Recirculating Loop Transmission
 PCT: Passive Component Test

Each mode has a full suite of analysis functions for detailed spectrum analysis.

All wide range of interfaces is available for remote control and export of data: 7x USB, 2x Ethernet (GbE), GPIB, DVI, VGA, HDMI, Trigger in & out.

Wavelength

 - Spectral Range : 1250?1700 nm
 - Span Range : 0.5 nm to full range (450 nm)
 - Linearity*1 : ±6 pm over 1500?1640 nm, ±20 pm over full range
 - Accuracy*1 : ±10 pm over 1500?1640 nm, ±25 pm over full range
 - Repeatability : ±2 pm
 - Sampling Resolution : 2 pm
 - 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)

Monochromator

 - Resolution Bandwidth : 20 pm native, adjustable over 50?2000 pm with 1 pm step
 - Dynamic Range (ORR) :

      ≥ 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 : ≥ 73 dB
 - Optical Power Input Power per Channel  : ≤ 20 dBm
 - Total Safe Power : ≤ 25 dBm
 - Level Sensitivity *7
 - single scan : High (0.5 nm/s): < -76 dBm (-78 dBm typ.)
 - with averaging *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 *10 : ±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

Sweep Speed

 - Sensitivity *7 ; -55 dBm at 2000 nm/s to -75 dBm at 2 nm/s
 - Sweep Cycle/100 nm *12 : 300 ms typ.
 - Sampling Rate : 1 MHz typ.

Optical Interfaces

 - Optical Input : SMF-28 type fiber
 - Calibration Output : Wavelength reference (see above)
 - Connector of Input and Output : 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)

 - Operating Temperature : +5 °C to +35 °C, +41 °F to +95 °F
 - Performance Guaranteed Temp : +18 °C to +28 °C, +64.4 °F to +82.4 °F
 - Storage Temperature : -10 °C to +50 °C, +14 °F to +122 °F
 - Humidity : 80 % RH, non condensing

Physical & Electrical
 - Dimensions & Weight W 413 x H 314 x D 385 mm, 15 kg
 - Power Supply 48 V DC input, ≤ 75 VA (adapter 100?240 V AC, 50?60 Hz to 48 V DC provided)

 - Screen 12 inch capacitive touch-screen (res. 1024 x 768)

External Devices

 - Screen VGA Port (x1), DVI-D Port (x1), HDMI (x1)
 - Others (mouse, hard disk, ...) USB 2.0-A (x4), USB 3.0-A (x2)

Remote Interfaces
 - Ethernet (2x RJ45) 1 Gb/s max.
 - GPIB (1x IEEE 488) 7.2 Mb/s max.
 - USB (1x USB 2.0-B) 115 kb/s max.

Triggers

 - In Start scan (BNC, 5 V TTL), Gate in RLT mode
 - Out Pulse on a user-defined span (BNC, 5 V TTL)

Data Storage

 - Internal 2 GB
 - External FAT32, NTFS
 - File Types csv, binary, jpg, png

*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),
*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.