Optical modulator wavelength dependency

  • Thread starter Thread starter mathias718
  • Start date Start date
  • Tags Tags
    Optical Wavelength
AI Thread Summary
Using wavelengths other than 1550 nm with lithium niobate electro-optic Mach-Zehnder modulators can lead to increased loss, particularly with shorter wavelengths, which may not be covered under warranty. The LN05S modulator is optimized for 1550 nm and features a low RF drive voltage and a fixed chirp coefficient, making it suitable for various data formats. However, if operated outside the specified wavelength range, users may experience temporary performance degradation that can be mitigated by heating the modulator. Another manufacturer indicates a wavelength-dependent loss of less than 1 dB within the 1520-1620 nm range. Overall, adherence to the recommended wavelength is crucial for maintaining optimal performance and reliability.
mathias718
Messages
1
Reaction score
0
What is the effect of using other than 1550nm light with an (LiNbO3, lithium niobate) electro-optic Mach-Zehnder modulator?

Thanks!
 
Engineering news on Phys.org
"The LN05S intensity modulator with external DC bias is a high-performance 40 GHz (40 Gb/s) modulator that has a single-ended drive configuration with a fixed chirp coefficient of ±0.7 and an industry-leading low RF drive voltage (5.5 V). The LN05S has a Mach-Zehnder interferometric architecture with external DC bias, ideal for both NRZ and RZ data format solutions.

Note: The modulators are designed for use in the 1550 nm window. Using the modulators at another wavelength (e.g., visible light) may cause a temporary increase in loss that is not covered under warranty. For instance, the increase in loss caused by shorter wavelengths can be reversed by heating a modulator to 50 °C for an hour."
http://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=3948

A different manufacturer claims: Wavelength dependent loss 1520-1620 nm = <1dB
 

Thread '3-terminal device external modeling'

Very basic question. Consider a 3-terminal device with terminals say A,B,C. Kirchhoff Current Law (KCL) and Kirchhoff Voltage Law (KVL) establish two relationships between the 3 currents entering the terminals and the 3 terminal's voltage pairs respectively. So we have 2 equations in 6 unknowns. To proceed further we need two more (independent) equations in order to solve the circuit the 3-terminal device is connected to (basically one treats such a device as an unbalanced two-port...
View full post »

Thread 'Question about the voltage between two charged capacitors'

suppose you have two capacitors with a 0.1 Farad value and 12 VDC rating. label these as A and B. label the terminals of each as 1 and 2. you also have a voltmeter with a 40 volt linear range for DC. you also have a 9 volt DC power supply fed by mains. you charge each capacitor to 9 volts with terminal 1 being - (negative) and terminal 2 being + (positive). you connect the voltmeter to terminal A2 and to terminal B1. does it read any voltage? can - of one capacitor discharge + of the...
View full post »
Thread 'Weird near-field phenomenon I get in my EM simulation'

Thread 'Weird near-field phenomenon I get in my EM simulation'

I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
View full post »

Similar threads

Optical-EME for licensed amateur radio operators
Replies
19
Views
1K
Critical bending radius of optical fibres
Replies
3
Views
4K
What is the purpose of Electro-Optical Modulator (EOM)?
Replies
1
Views
1K
Cannot lock reference signal on lock-in amplifier
Replies
5
Views
2K
Controlling output light power by constructive/destructive interference
Replies
5
Views
2K
I Software for optical simulation with interference
Replies
2
Views
2K
A Imperfectly Phase-Modulated Light / Residual Amplitude Modulation
Replies
2
Views
1K
Can I use PID to maximize a detector signal?
Replies
23
Views
2K
I Creating a wavelength selectable light source with diffraction grating
Replies
2
Views
2K
A When should I analyze optical problems using ray tracing vs. wavefront analysis?
Replies
12
Views
334

Hot Threads

Recent Insights

Back
Top