OPTIGRATING

This topic has 39 replies, 11 voices, and was last updated 8 years, 7 months ago by FAYIQA NAQSHBANDI.

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- April 13, 2016 at 3:06 pm #36614
  
  deepak jha
  Participant
  
  Hello,
  
  I am new to the forum and I just want the most appropriate answer to my question..
  
  Can anyone tell me the difference between optigrating and fiber bragg grating ? Is there really the difference between the two ? I somewhere read they are the same ?
  
  Thanks and Regards
- April 14, 2016 at 12:23 am #36625
  
  deepak jha
  Participant
  
  Hi all,
  
  Still looking for replies… Someone please help…
  
  Thanks and regards
- April 14, 2016 at 1:46 am #36628
  
  Ankita Sharma
  Participant
  
  Hi Deepak,
  
  OptiGrating is a wider (more general) term for optical gratings used in literature. It includes gratings for different waveguides structure (cilindrical, slab, etc.) and gratings with different profiles (fiber Bragg or some other kind)…. I hope this helps
  
  Regards
  Ankita
- April 14, 2016 at 1:49 am #36629
  
  Kanwarjeet Singh
  Participant
  
  Hi Deepak Jha
  As far as i understand you have missed a very important understanding difference of the two. Optigrating is a tool while fiber bragg grating is a device that can be used in system design. Although optigrating tool is used to fabricate the grating. I hope this will help you in distinguishing the two.
  Thanks
  
  All the best
  - April 14, 2016 at 11:35 pm #36810
    
    nagesh kuknoor
    Participant
    
    Hello Deepak,
    
    I agree to most of what Kanwarjeet has said. This is the basic difference in two no need to confuse yourself.
    
    Thank you
  - April 15, 2016 at 12:23 pm #36916
    
    Domail Singh
    Participant
    
    Hi kanwarjeet,
    I find your answer more apt. Thank you for mentioning the difference. It was worth mentioning.
    
    Regards
    Domail
- April 14, 2016 at 1:51 am #36630
  
  deepak jha
  Participant
  
  Hi Ankita,
  
  Do you mean they are the same ?
  
  Thanks and regards
- April 14, 2016 at 2:25 am #36632
  
  Kanwarjeet Singh
  Participant
  
  Hi Deepak,
  As i told there is a difference between the two so you must understand both are not same. I hope it helps you
  Thanks
  
  All the Best
- April 14, 2016 at 2:32 am #36640
  
  deepak jha
  Participant
  
  Hi Kanwarjeet,
  
  Thanks for the reply.. Will surely look into the details of it…
  
  Regards
- April 14, 2016 at 2:43 am #36646
  
  Ankita Sharma
  Participant
  
  Hi Deepak,
  
  No they are not the same it has been very rightly said by kanwarjeet that Optigrating is a tool while fiber bragg grating is a device that can be used in system design. Although optigrating tool is used to fabricate the grating..
  
  Regards
  Ankita
- April 14, 2016 at 2:50 am #36650
  
  FAYIQA NAQSHBANDI
  Spectator
  
  HELLO DEEPAK JHA..
  
  I completely agree with Kanwarjeet. There is definitely a deifference between the two as mentioned by him..
  That shall help you.
  
  with Regards
  FAYIQA
- April 14, 2016 at 2:51 am #36651
  
  Rajguru M. Mohan
  Participant
  
  Hi Deepak,
  As we know that Light signals at wavelengths other than the Bragg wavelength, which are not phase matched, are essentially transparent. A fiber Bragg grating (FBG) is a type of distributed Bragg reflector constructed in a short segment of optical fiber that reflects particular wavelengths of light and transmits all others.
  The non-uniform (chirped and apodized) grating is divided into Number of Segments uniform gratings. The coupled mode theory is used to calculate the scattering matrix of each uniform segment, and the spectral response of the whole grating is found by connecting the uniform segments using the transfer matrix theory. The apodization functions are Gaussian and Hyperbolic tangent. The chirp functions which is used as follows:
  Linear, Quadratic, Square Root, Cubic Root.
  - April 14, 2016 at 3:12 am #36664
    
    Kanwarjeet Singh
    Participant
    
    Hi Rajguru,
    I think he wishes to know the basic difference between the two. I guess you are going for depth.
- April 14, 2016 at 2:53 am #36652
  
  deepak jha
  Participant
  
  HI all,
  
  Thanks for your responses and providing the valuable information…
  
  Regards
  - April 14, 2016 at 3:14 am #36665
    
    Kanwarjeet Singh
    Participant
    
    you are welcome Deepak. Hope your doubt is clear now about the difference.
    
    Regards
- April 14, 2016 at 2:55 am #36653
  
  Rajguru M. Mohan
  Participant
  
  Hi,
  I also wish to add about optigrating.
  OptiGrating uses the Coupled Mode Theory to model the light and enable analysis and synthesis of gratings and conference publications which reference the use of OptiGrating.
  Please refer to following links to get more about FBG and grating:
  https://optiwave.com/category/products/component-design/optigrating/
  
  Fiber Bragg Grating
  
  http://spie.org/Publications/Proceedings/Paper/10.1117/12.2053091
  http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1877804
  Hope this will help you.
  - April 14, 2016 at 3:16 am #36667
    
    Kanwarjeet Singh
    Participant
    
    Hi Rajguru,
    As i mentioned you are going into the detail of implementation. he wished to know the basic difference. I guess he would have got it now.
    
    Regards
- April 14, 2016 at 3:02 am #36659
  
  deepak jha
  Participant
  
  Hi Rajguru,
  
  Will surely try into the links provided by you…
  Thanks for your efforts
  
  Regards
- April 14, 2016 at 3:18 am #36668
  
  Ankita Sharma
  Participant
  
  Hi Rajguru,
  
  Very valuable information provided by you…
  
  Regards
  Ankita
- April 14, 2016 at 3:27 am #36671
  
  Kanwarjeet Singh
  Participant
  
  Hi Ankita i agree to that but the question was a basic question. It does not need the concepts. I hope you understand.
  
  Regards
- April 14, 2016 at 3:34 am #36675
  
  deepak jha
  Participant
  
  Hi Kanwarjeet,
  
  Thanks for the information…
  All the best
  
  Regards
- April 14, 2016 at 3:43 am #36676
  
  Kanwarjeet Singh
  Participant
  
  You are welcome deepak.
  
  Regards
- April 14, 2016 at 5:28 am #36686
  
  Rajguru M. Mohan
  Participant
  
  Hi Deepak,
  Fiber Bragg Grating is the application of Optigrating. The link which is depicted below states it.
  https://optiwave.com/category/products/component-design/optigrating/optigrating-applications/
  A complex grating is approximated by a sequence of uniform segments, and analyzed by connecting the segments with the well-known Transfer Matrix Method.
  There are many applications of optigrating are:
  WDM add/drop, narrow and broadband fiber and waveguide filters
  Fiber Bragg reflectors
  EDFA gain flattening elements
  Dispersion compensators for fiber communications
  Sideband suppression using grating apodization
  Fiber and waveguide sensors
  Long Period Gratings with coupling to cladding modes
  
  Hope this will help you to understand.
- April 14, 2016 at 11:32 am #36703
  
  Kanwarjeet Singh
  Participant
  
  Thanks Rajguru for the information but i feel you still did not understand the question. Anyways Thanks for the links and related information.
  
  Regards
- April 14, 2016 at 11:50 am #36711
  
  Ankita Sharma
  Participant
  
  Hi Rajguru,
  
  Thanks for the information…
  
  Regards
  Ankita
- April 14, 2016 at 1:36 pm #36736
  
  deepak jha
  Participant
  
  Hi Rajguru,
  
  I appreciate your efforts and thanks for the concern..
  Alll the best..
  
  Thanks and Regards
- April 14, 2016 at 11:38 pm #36811
  
  nagesh kuknoor
  Participant
  
  Hi All,
  
  It should be very clear for Deepak now to see the distinction between the two. it shall have helped him. It was rather a Good discussion. May good points were being discussed yet the question was basic.
  Thank you
- April 15, 2016 at 12:10 am #36822
  
  shafeen al yasin
  Participant
  
  Hi Deepak,
  A good discussion it is. I agree with Fayiqa Nagesh Ankita and rajguru. All have made valid points but as kanwarjeet has said that it is a basic query and the aforementioned difference is enough to give you some idea. I hope it will be very helpful to you.
  
  Regards
  Shafeen
- April 15, 2016 at 12:27 pm #36917
  
  Domail Singh
  Participant
  
  Hi All
  Indeed very informative links provided by Rajguru. a good discussion also.
- April 16, 2016 at 5:08 am #37138
  
  jyoti raina
  Spectator
  
  hi deepak sir..
  i agree with kanwarjeet sir..it is the basic difference he has mentioned..try looking for more..
  
  with regards
  jyoti
- April 16, 2016 at 5:16 am #37145
  
  deepak jha
  Participant
  
  Hi all,
  
  Thanks for your efforts… It is really nice that everyone is contributing to your query… Cheers
  
  Regards
- April 16, 2016 at 5:32 am #37157
  
  Ankita Sharma
  Participant
  
  Hi Deepak,
  
  You are welcome.. You will get the desired help on the forum…
  
  Regards
- April 16, 2016 at 2:34 pm #37253
  
  nagesh kuknoor
  Participant
  
  Hi Deepak,
  You are welcome. i hope the information was very helpful.
  
  Regards
- April 16, 2016 at 4:20 pm #37304
  
  deepak jha
  Participant
  
  Hi all,
  
  Thanks and regards once again… Glad for the concern of the forum members…
- April 16, 2016 at 4:25 pm #37306
  
  jyoti raina
  Spectator
  
  Hi deeapak sir..you are welcome deepak ..
  
  with regards
  jyoti
- April 16, 2016 at 5:33 pm #37318
  
  Manoj Kumar
  Participant
  
  Hi Deepak,
  
  You are welcome…
  
  Regards
- April 18, 2016 at 6:50 am #37848
  
  Rahul Tiwari
  Participant
  
  Hi all,
  
  Infact a very meaningful discussion..
  
  Regards
- April 19, 2016 at 2:53 am #38276
  
  FAYIQA NAQSHBANDI
  Spectator
  
  HI ALL..
  
  I agree to some points but largely the difference is mentioned by Kanwarjeet in some comments..That must be surly of some help to Deepak.
  
  Regards
- April 19, 2016 at 3:37 am #38298
  
  deepak jha
  Participant
  
  Hi all,
  
  Thanks everyone for your responses….
- April 19, 2016 at 3:39 am #38299
  
  FAYIQA NAQSHBANDI
  Spectator
  
  HI DEEAPAK..
  
  You are welcome Deepak
  
  Regards
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